by Laney boy January 14, 2019

One man sitting on the toilet the normal way while pooping. While a second man is sitting on the first man’s lap, facing the first man, pooping as-well. All while a third man jerking of the second man, while they are all looking at the second man’s penis.
“My friend Roberto is coming over Saturday night, would you join us to complete our Triple Decker Fluffanutter?”
by TheNibus5000 June 12, 2025

When two people have to poop simultaneously, so one person sits the the lap of another while facing each other on the toilet. If it’s a boy and girl and they are having vaginal intercourse while double decking, it’s called docking the buses.
Yesterday my bro and I had to both poo, but the spare bathroom was close. We ended up doing a double decker, luckily the bowl didn’t fill up.
My girl and I had to drop a deuce so we double decked. She’s got them big boobs though, so after a minute we docked the buses ;)
My girl and I had to drop a deuce so we double decked. She’s got them big boobs though, so after a minute we docked the buses ;)
by MelonLord95 April 9, 2022

Performing a European Double-Decker involves a male and female deficating in the bowl and resevoir (respectively) with the male straddling the resevoir, thus giving him access to perform cunnilingus on the female.
Brad and Angela just got back from a European Double-Decker in the bathroom. You can tell by his white mustache and brown soul patch.
by Ninjow June 17, 2021

by BattyCrease3000 January 2, 2017

The Lil Deckers are fans of British singer/songwriter Declan McKenna. They're known for being "loud, memey, audacious, and musicheads" according to the musician.
Did you hear that Declan McKenna said his fans don't have a name? It's as if The Lil Deckers don't even exist to him.
by skadeordie September 9, 2020

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
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 4, 2024
