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

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 Laney boy January 14, 2019

by Blueberrybitchnigga May 30, 2024

where you receive oral sex while shitting in the top part of the toilet while the other party shits on the bottom
while I was taking a upper Decker she caught me and sat down to double decker me before I could finish.
by anonymous May 30, 2024

When a guy is peeing in a urinal while another is peeing in between his legs. (In a heterosexual manner)
by Maddoxault September 7, 2023

by bonelesspizza January 29, 2017
