Double Decker 

A bowel movement that was produced on top of another bowel movement.

The party was mortified when they discovered Steve had landed a Double Decker on Shannons shame.

Double Decking
Bismark

Double Decker by Fresco Wisdom August 6, 2011

Double Decker 

n. An act involving two people pooping at once whereby the first person sits on the toilet seat and the second straddles the bowl while sitting on the first person's lap.

In order so save water, we did a double decker.

Double Decker by Matty Scat August 13, 2006

double decker 

When you take a shit but don't flush and then later take another shit on top of it.

I just did a wretched double decker and I think the toilet is going to overflow.

double decker by sune3000 April 14, 2006

double decker 

an inflatable matress the size of a queen bed. it is designed for one human to sleep on at a time. it is also a great device to get extra rest on.

Rich: hey john, where are you going?
John: oh, im heading up to the double decker to get some extra rest.

double decker by porpoise September 29, 2005

double decker 

One set of tits on top of another.

I thought that girl had a double decker but it turns out the bottoms were implants.

double decker by whycan'tibeblank March 29, 2009

Double Decker 

The act defacating twice in 1 day.

Yo I had a Double Decker yesterday

Double Decker by ROBOPANDA May 7, 2011

double decker 

When a person stacks one fist on the other, and aggressively shoves them into a woman's vagina.

"I'm still hurting from his double decker last night"

double decker by Kelsey15 March 20, 2014