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
When taking a shit, having someone sit on your lap aiming their anus between the first person's legs. Both people shit at the same time, creating a "double" effect and saving water in the process. For utmost efficiency, time the splashes similar to Olympic synchronized diving.
by iAM December 14, 2013
by E.D.M. August 14, 2007
" My boss pissed me off so I snuck into his private bathroom and left him a double decker on his toilet tank."
by Vizualist February 10, 2012
by Urban Dictionary July 16, 2005
One Bro Gets a blowjob while the girl is on all fours on the ground. While this is happening, another Bro gives it to the girl from behind. Both Bro's preceed to run forwards until the girl is bent in half. Then she makes both Bro's a sandwich.
-"dude she's in the hospital!"
-"Yea i know, after we double-deckered her, she made us sandwichs, then we told her to walk to the hospital."
-"Yea i know, after we double-deckered her, she made us sandwichs, then we told her to walk to the hospital."
by Bro Bro Bro Bro Bro December 12, 2010
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