Best Friend Upper Decker

Perform an upper decker whilst your best friend shits in the bowl part of the toilet

15+ years friendship recommended, but not requires
"Why were you both in the bathroom?"

"We just best friend upper deckered that bitch"
by Badbtchfr April 11, 2022
Get the Best Friend Upper Decker mug.

upper school crush

This means to have an interest in someone who is older than you or someone who is in a year above you
"Kurt used to be my upper school crush"
by Biggiereds June 22, 2023
Get the upper school crush mug.

upper shit

When it hurts, but it is not your tummy and it is not your immediate shit - it is the upper shit.
Damn, I shouldn't have eaten that burrito, I can feel it in my upper shit. I am going to have a bad time at the toilet soon.
by DongJones October 11, 2015
Get the upper shit mug.

Upper Decker

When you take a huge dump into the water tank, hence the name upper decker.

Y'all have probably seen many more definitions and guides, but I'm gonna teach y'all how to do one even better.

1. Follow the typical steps to taking an upper decker and take all neccessary precaution to not get caught.

2. On top of shitting the most horrendous turd you can manage into the water tank, also dump in a significant quantity of high calorie food or drink (like bread, meat, highly sugary drinks, etc). This gives the microbes in the shit food to feed on, making the toilet even more nasty on top of the shit thats in there.

3. Profit
Man, that dude Jim was so mean last night. I can't wait to see the look on his face once he finds out about the Upper Decker Moldy Edition TM I did to his upstairs toilet
by PT118 May 05, 2024
Get the Upper Decker mug.

upper decker

when u shit on the top deck of the toilet
ima leave a upper decker
by Γρεεκ φεμβοΥ November 27, 2024
Get the upper decker mug.

Upper Decker

When a phish show is so bad, someone jumps from the top tier head first into the audience.
"Brah, are they playing gotta jiboo again? Gawd I'm gonna smoke some sourD then take an Upper Decker'
by MomoDanceSkunkPusky October 18, 2021
Get the Upper Decker mug.

Upper Decker

Chicago slang for whipping out the rumpus maximus, doing a fruity little dance with your tooter, and shitting on one's roof.
Guy 1: he did an upper decker on my roof.
Guy 2: ewww man gross. Give him a Chicago sunroof
Guy 1: yeah I will, gotta get my gut going first though. Wanna get some deep dish pizza?
Get the Upper Decker mug.