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
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
While taking a duece you realize you need to puke. You cannot reposition yourself so you puke while duecing, therefore you are flowing from both floors, the double decker.
by Jon S. April 20, 2004
by sune3000 March 6, 2006
by Score!! February 25, 2019