When one sits face to face with another on the toilet…legs spread on the bottom bunk, so that defecation and urination can occur between the legs from the top participate.
Hey, wanna go bunk beds to save some time?
by Breadfat August 20, 2021
When 2 people use the same toilet at the same time. One person using the normal seating position on the bowl, and the other takes a seat on the top tank Upper Decker. Term originated at a warehouse in Holbrook, Long Island.
All the stalls but one were full, so me and Jose did BUNK BEDS in the only empty stall.
by Will Zone April 15, 2003
After intense sex and finishing, most likely doggie style; the top partner falls asleep without pulling out.
Last night, we were so drunk, we ended up bunk-bedding.
by JessicaWhitePass August 10, 2014
A place where no one will ever have sex.
Girl 1: I really wanted to have sex with him but when i saw his bunk bed I went home.

Girl 2: Yea the same thing happened to me too but i just made him get rid of the top bunk, so it was just a normal bed.
by Noahakmen November 17, 2009
What you build to make room for activities.
Dale: The bunk beds look amazing! Look at that! It looks like one you'd buy from a store! Look at all this floor space!

Brennan: SO many activities!
by Dr. Doback July 28, 2010
Two guys who are about the height have a four way. In this four way, there is one girl bent over, doggy - style in between the two guys, while the other girl is in a plank position on the shoulders of the men. The girl on the bottom will be taking it doggy style while blowing the other guy. The girl on top will be making out with one guy, as the other guy will be feasting on her snatch from behind
John: I heard you went bunk Bedding with Stacy and Hailey, and Brock last night!
Matt: Yeah dude, we bunk bedded soo hard last night!
by The JewBear June 3, 2015
when you are making out with a girl on the top bunk while her roommate sucks your dick on the bottom bunk
I got bunk-bedded in room 136 last night it was epic.

Bunk-bedding is my favorite thing to get roommates to do.
by bethie8371 October 7, 2015