by Adam Smirti May 21, 2007
When you are taking a shit in the upper tank, she's giving you a blumpkin while taking a shit in the bowl.
by The Jake Bush a.k.a. Switch November 13, 2008
The double decker is a combination of the upper decker and a blumpkin. The guy is on the top tank performing an upper decker while the girl faces the wall with her feet on the toilet seat giving him a blumpkin while she drops a deuce in the bottom tank
by tnfungi January 6, 2009
by Urban Dictionary July 16, 2005
The double decker is a strange sex move which consist a woman taking a shit and a guy shoves his cock in her ass without protection while the shit is coming out and then he puts it in the womans vagina and them cums then the woman farts out the cum and drips it on the guys cock then he puts his dick back in her ass while there is still clumps of shit in her then he puts in in her mouth.
by THE_HENTAI_GOD May 19, 2019
When you’re so horny but you also gotta take a poop, so for some odd reason you decide to poop inside the top part of the toilet then blow a load on top of it.
My girl had me so hot but so did that Taco Bell, I had no choice but to pop off the toilet lid and drop off a double decker.
by TacoBangBang March 7, 2021
When a man and a women, a man and a man, or a women and a women, lay on top of each other and either fuck, or finger each other
by Backseat Flat Stanleys January 31, 2017