My Membership Is Not Your Wallet

Early Saturday morning, my roommate Cassie walked over to my bed.

Becca, can I borrow your Costco card? I just need to run in and grab some things.

I was too sleep-deprived to think it through. Since a Costco card is just a membership pass and not an actual payment method, I didn't see the harm in it.

I mumbled an agreement and drifted back to sleep.

By the time my eyes cracked open again, the afternoon sun was cutting a sharp, dusty line across my dorm room. It was 2:00 PM.

I reached for my phone, and the screen was already drowning in notifications from our sophomore class group chat.

Cassie: Hey guys, since the new Costco just opened up down the road, I figured some of you might not have had a chance to check it out. Im going tomorrow. My treatgrab whatever you want.

The replies were a cascade of sudden, sycophantic praise.

Cassie, since when are you a secret heiress?

Wow, big spender! Thanks, boss!

I stared at the screen, my brain struggling to connect the girl in those texts with the roommate I actually knew.

Cassies family was strugglingdeeply so. She was on the universitys maximum financial aid package, and her daily life was a masterclass in aggressive survival. She worked long hours washing dishes at the campus dining hall, mostly because it paid a small stipend and, more importantly, came with free meals.

Where on earth was she getting the money to host a wholesale shopping spree?

Then, a cold realization bloomed in the pit of my stomach.

My card.

Did she think the membership card was a pre-loaded gift card? Did she think my annual fee meant there was actual cash sitting on that little piece of plastic?

1.

The new Costco had opened near campus a few weeks ago, and it was all anyone could talk about.

Id gone out and bought an Executive Membership the very day it opened. Not for any logical reason, reallyI just had a massive craving for their bulk snacks. Id always loved their giant tubs of peanut butter pretzels and the massive bakery muffins, but since there hadnt been a location near my hometown, my parents used to ship them to me in oversized cardboard boxes.

Using my parents' shared account always felt slightly stifling, though. They could track every single transaction, every late-night run for chocolate-covered almonds. So, I sucked it up, paid the annual fee myself, and walked out feeling a strange, adult sense of sweet independence.

When I got back to the dorm, my roommates were sitting around the cramped common area, debating whether it was worth the money to sign up.

I threw my hands up in a grand, generous gesture. "Don't bother spending the cash. You guys can just use mine whenever you want."

Everyone was there, including Cassie. The offer had hovered in the air, a casual piece of college camaraderie.

And then came this morning.

The sun wasn't even up when she shook my shoulder.

"Cassie, what the hell?" I groaned, rubbing the sleep from my eyes. Ive never been a morning person, and being jolted awake at dawn is a surefire way to ruin my mood.

But she didn't seem to noticeor care aboutmy irritation. She stood over me, her hands clasped together.

"Becca, can I borrow your Costco card?"

My brain was still fogged with sleep. It took me a few seconds to even register what she was asking for. Seeing me hesitate, her face tightened, and her voice took on a sharp, whiny edge.

"You literally said we could all use it. I've never even been to one. Come on, Becca. Just do me a favor and let me borrow it."

I shrugged it off. It wasn't a big deal. It was just a laminated pass to get through the sliding glass doors. And looking at her tense, expectant posture, I knew that if I said no, shed probably stand there arguing until my Saturday morning was completely ruined.

"Fine, it's on my desk. Just let me sleep."

I let the heavy warmth of sleep pull me back under, completely missing the warning signs.

When I finally woke up and saw the 99+ unread messages, my heart did a little flutter. I thought there had been some kind of campus emergency.

I scrolled back to 9:30 AM.

Cassie had posted in the group chat, inviting everyone on a trip to Costco.

Some of the wealthier, more cynical kids had immediately started poking fun at her.

Why would we go with you? To stare at the ceiling? Do you even know how expensive bulk shopping is?

Honestly, I doubt you can even afford the parking.

Cassie didn't back down. Instead, she dropped the bomb:

My treat. Grab whatever you want.

That shut them up. The teasing turned to immediate, desperate flattery.

But I knew Cassie. I lived with her.

Her monthly allowance from her parents was barely enough to cover laundry, let alone groceries. She survived on campus jobs, taking the worst shifts at the dining hall because it guaranteed her a hot meal she didn't have to pay for.

Even if she somehow had a sudden windfall of cash, Cassie was not the type to share it.

She was deeply, painfully frugalexcept when it came to her own image. She had once taken out a high-interest point-of-sale loan just to buy a designer winter coat she couldn't afford, just so she could wear it to lectures.

When she ran out of money, she would casually "borrow" our food to survive. A splash of my oat milk here, a scoop of Leah's peanut butter there. Once or twice was fine, but over months, it became an exhausting tax on our patience.

Wed tried gently bringing it up, but shed just nod and then, when she thought we weren't looking, rifle through our drawers anyway.

She was fiercely protective of her own resources, yet entirely comfortable consuming ours.

So why this sudden, reckless generosity?

Then, the puzzle pieces clicked.

She had heard me complaining about how expensive the membership fee was a few days ago. She must have thought the Costco card was a loaded debit card.

She thought my annual fee was actual store credit.

2.

The idea was so absurd that if it were anyone else, I would have laughed it off. But Cassie had grown up in an incredibly isolated, impoverished rural town. Our academic advisor had once subtly mentioned her background to us, asking us to be patient with her transition to college life. She truly might not understand how these wholesale clubs worked.

Feeling a sudden knot of anxiety, I decided to call her.

The first two calls rang out. On the third, just as I was about to hang up, she finally answered.

The moment the line connected, a wave of hesitation hit me. How was I supposed to ask her this?

Hey, do you realize youre broke?

What if she actually did have the money? What if shed saved up from her dining hall shifts to do something nice for her classmates?

If I brought it up, Id look like the elitist roommate making cruel assumptions based on her background. I didn't want to humiliate her.

Its not that I looked down on her, but her methods of saving money were legendary in our dorm.

Once, wed gone out for a group dinner. Cassie refused to order anything, sitting there with an empty plate, watching us eat. Every time I reached for another slice of garlic bread, she would let out a loud, pointed cough.

I didn't realize what she was doing until after we paid and left. She pretended shed left her umbrella at the table, went back inside, and packed up all our leftovers.

The next day, she reheated the food, packaged it into small containers, and sold it to the girls down the hall as "homemade stir-fry." We were horrified when we found out.

But she just beamed, completely immune to our lectures on hygiene and basic ethics, thrilled by her profit margin.

That was just the tip of the iceberg.

During her period, she would spend hours sitting in the communal bathroom stalls to avoid buying tampons. When we finally felt bad and gave her some of ours, shed turn around and sell them to underclassmen for a dollar a piece.

She used AI-generated photos of damaged goods to get refunds on Amazon.

She practically cleared out the dining hall's supply of napkins and toilet paper every single week.

I lived in constant fear that one day, someone was going to lose their temper and physically confront her.

Yet, despite this desperate penny-pinching, her vanity was boundless. She would starve herself for a week just to buy a knockoff handbag, all while maintaining an online persona of a wealthy girl simply "experiencing the rustic charm of campus life."

Because we never publicly called her out, most of our classmates still bought into the act.

"Hello? Becca? What do you want? International minutes are expensive," she snapped over the line.

"This call is on your dime, by the way."

I opened my mouth, but the words caught in my throat. "Never mind. I was just wondering when you'd be back."

"Late. Don't wait up." She hung up.

She did come back latejust minutes before the dorm's midnight curfew.

Before she arrived, Leah was sitting on her bed, venting her frustration.

"I thought college was supposed to be the best four years of my life," Leah muttered, throwing her hands in the air. "Instead, Im living with a literal psychopath."

"She doesn't listen to a word anyone says."

"Ive told her a thousand times: do not cook raw garlic and fish in the bedroom. My clean laundry smells like a cheap takeout place. How am I supposed to wear this to my internship interview?"

"And she never washes her dishes. There are actual fruit flies hovering over her desk."

Leah was practically vibrating with rage, trying to get all her anger out before Cassie walked through the door.

Fiona and I nodded in silent solidarity. Our dorm didn't have a balcony, so the only place to dry our clothes was on a rack near the windowwhich happened to be right next to Cassie's bed. To save money on dining hall meals, Cassie had bought a cheap hotplate and cooked heavy, pungent meals right in the middle of our small room.

The grease and smoke clung to everything we owned.

Wed tried to negotiate shifting our beds around, but Cassie had shut it down immediately.

"No way. I like the sunlight here. It saves me money on vitamin D supplements," shed said, without a hint of irony.

"But if you guys want to swap so badly, you can just pay for my meal plan. And buy my vitamins."

"Since we're roommates, I'll give you a discount. Three hundred bucks a month."

Three hundred bucks? It was absolute extortion.

We had been left speechless, entirely powerless against her thick-skinned audacity.

When the door clicked open and Cassie stepped in, we immediately fell silent.

As she brushed past me, I remembered her planned excursion for the next day. I felt a sudden, annoying pang of conscience. I had to say something.

"Hey, Cassie," I said, keeping my voice as gentle and non-confrontational as possible. "Just so you know, my Costco card is only to get you through the door. You can't use it to actually pay for the groceries at the register."

If she already knew, it was just a harmless reminder. If she didn't, I was saving her from a massive public embarrassment.

Instead, her face twisted in instant fury.

She marched over, cornering me by my desk, and pointed a finger directly at my face.

"What is that supposed to mean? Do you think I'm trying to steal your money?" she shrieked.

"Youre making up lies just to keep me from using it!"

I raised my hands, retreating slightly. "No, Cassie, you're misunderstanding. There's literally no money on that card. It's just an ID."

Leah and Fiona jumped in to defend me, but Cassie was completely deaf to reason.

"You guys are just looking down on me!" she yelled, her eyes flashing with a deep-seated, toxic insecurity.

"If I had the kind of family money you guys have, Id be doing way better than any of you."

"You called me earlier just to grill me about this, didn't you? It's a stupid plastic card, Becca. I can't believe you're being this petty. Get a life."

I rolled my eyes, the last drops of my empathy evaporating. If I hadn't given her the secondary card on my account this morning, I wouldn't even be in this mess.

Fine. Let her do whatever she wanted. I was done trying to protect her.

Even if she did have some secret stash of money to pay for everyone, it wasn't my business. And if she didn't, well, my Costco account didn't have a line of credit attached to it anyway. She couldn't ruin my finances.

I had tried to be a decent roommate. If she wanted to run headfirst into a brick wall of her own making, I wasn't going to stop her.

3.

The next morning, I woke up to the sound of rustling.

Cassie was sitting at my vanity, her back to me.

I didn't say anything, quietly slipping out of bed to see what she was doing.

She was digging her fingers into my expensive moisturizers, smearing them haphazardly over her face. My vanity, usually neatly organized, was a disaster zone of open caps and spilled powders.

With one clumsy scoop, she had scooped out nearly half of my expensive face cream.

The sheer disrespect snapped my patience. "What the hell do you think youre doing?" I yelled.

"Who gave you permission to touch my stuff?"

Cassie spun around. But it wasn't her garishly painted, ghostly pale face that stopped me coldit was her phone, propped up against my mirror, showing a live FaceTime call.

I didn't have my contacts in, but I could clearly make out the outline of a guy on the screen.

I let out a sharp gasp, suddenly hyper-aware of my thin summer pajamas. I was practically exposed on a live video feed to some random stranger.

Leah and Fiona bolted upright, fully awakened by the shouting.

"What is your problem?" Cassie sneered, completely unfazed. "It's just a little lotion. You don't have to scream like a maniac first thing in the morning."

"Cassie, we literally agreed on this," Leah said, her voice shaking with anger. "No FaceTime calls without warning between 10 PM and 8 AM. We sleep in here. Some of us actually care about our privacy."

"If you want to talk to your boyfriend, draw your bed curtains or go out into the hallway."

Cassie rolled her eyes, packing up her bag. "Oh, please. With your flat chest, nobody's looking at you anyway."

"I pay rent here. This is my room too, and Ill do whatever I want. You don't own me."

She finished her makeup, entirely ignoring our boiling rage, and shoved past me to get to the door.

"Move. Im going to be late."

I stood there, trembling, looking at my ruined makeup and the expensive jar of cream that was now mostly smeared on her collarbones.

It wasn't just me, either. Leahs closet doors were wide open, and Fiona's desk drawers had been rummaged through. Cassie had clearly gone on a shopping spree in our own room before heading out.

"I can't do this anymore," Fiona whispered, staring at her messy drawer. "I am going to lose my mind."

Buzz.

My phone lit up. It was a message in the sophomore group chat:

Were meeting by the campus gates in ten. Dont be late!

A string of enthusiastic thumbs-up emojis followed.

Our major was relatively small. Excluding the three of us and a few others who saw right through Cassie's act, there were only about four or five classmates going with her.

If they only bought a few small things, maybe she could actually cover it.

But remembering her defensive, arrogant outburst from last night, I had a sinking feeling this wasn't going to end quietly. She was too proud to back down, and too ignorant of how the system worked to realize she was walking into a trap.

When I voiced my suspicion, Leah and Fionas eyes lit up.

"Oh my god," Leah gasped, clapping her hands. "She really thinks she can just swipe your membership card at the checkout."

"What is she going to do when it gets declined?"

"She probably thinks that if she gets a massive haul and it somehow goes through, she can play the wealthy benefactor. And if you find out later, shell just use the 'we're roommates, don't make a big deal out of it' card."

"But she doesn't realize..." Fiona started laughing, a bright, wicked sound. "Oh, this is going to be a disaster. Sweet, cosmic justice."

I rubbed my temples. "Come on, guys. We don't know for sure."

Leah grabbed my arm, already pulling me toward the door. "Are you kidding? We are absolutely going to Costco right now to watch this show."

We didn't even have to look hard to track them.

Half the sophomore class was posting on their Instagram Stories.

Costco Sunday with the crew. Big things coming.

Seeing how the other half lives. Thank you, Cassie!

The photos featured shopping carts stacked high with expensive electronics, prime cuts of beef, and imported chocolates. It was easily hundreds of dollars per cart.

By the time we arrived at the warehouse, we spotted them near the bakery section. Cassie was leading the pack, tossing items into three separate carts like she was on a game show. The carts were piled so high they blocked her line of sight.

We kept our distance, ducking behind a massive pyramid of toilet paper rolls to avoid being seen.

She was completely intoxicated by the attention, basking in the compliments of the classmates trailing behind her. She didn't notice us at all.

I watched her add a massive Bluetooth party speaker to the pile. In my head, I was doing the math.

Three carts. High-end groceries. Electronics.

This wasn't a bill a college student could just casually shrug off. This was thousands of dollars.

Finally, the group headed toward the checkout lines.

Since the register area was wide open, we lingered by the seasonal items nearby, pretending to examine patio furniture while keeping our eyes glued to the scene.

The cashier began scanning the mountain of items. Cassie stood there, looking exhausted but smug, her arms crossed.

"Alright, your total is 0-0,482.50," the cashier said, her voice flat. "How will you be paying today?"

Cassie reached into her pocket, pulled out my Costco membership card, and slid it across the counter.

"Just charge it to this."

The cashier looked at the card, then up at Cassie, her brow furrowing.

"Ma'am, this is just a membership card. Do you have a Visa or cash?"