Costco Dogging 

Costco Dogging is the act of going to Costco and buying a large $1.50 hotdog and proceeding to throw away the hot dog and sliding your penis into the remaining bun. The participant must fill the urethra with every condiment available and is not allowed to leave Costco until someone sucks all of the condiments out. The act of Costco Dogging typically takes a week or more.

Yo bro I dare you to go Costco dogging, last I heard William was stuck in the Costco for weeks!

Costco Dogging by CostcoDogOfficial April 22, 2019

Costco-dependent

You are too cheap to get your own Costco card but you attach yourself at the cart with a friend who does and you can get the benefits of the Costco buying discounts.

Hey Sally, I am feeling very Costco-dependent today, are you going by chance? I need to get that huge package of toilet paper. I'll buy you a hotdog?

Costco-dependent by beeknee September 1, 2011

costco door 

A miniature door leading straight from the garage into the kitchen pantry, allowing someone to slide their groceries straight into the pantry. A costco door is small and not intended to walk through.

Unloading the car was so much quicker since we could slide everything through the costco door.

costco door by Sivirjdmvkskfjcme June 28, 2017

Costco Daze

the state in which the individual in question is in when aimlessly wandering about Costco crashing their oversized carts into stacks of oversized produce/paper goods/electronics.

I always find myself in a Costco Daze when I plow over an innocent 4 year old while trying to find the Palmolive supersize bottles.

Costco Daze by drugdr February 6, 2012

Costcodian

The act of purchasing or consuming more than is needed.

They had to find a larger place to live because of their costcodian lifestyle.

Costcodian by Wishbone1000 December 20, 2014