dubble decker

A dubble decker is when a guy is on a girl and has his penis in her butt whole.

I herd that kid Todd talking about Jason and Gabriella doing a dubble decker last week

by Pit28123 March 12, 2017

diaper decker

The act of defecating in the baby changing station at a public bathroom, then folding up the door leaving a nasty surprise for the next parent. This act comes from the idea of an "upper decker" or a "top shelf".

The toilets in that rest stop are disgusting. I couldn't take a chance to rest my cheeks on one of those seats. So I left the men's room a diaper decker.

by Magoo Wes March 26, 2010

Double Decker

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

Double Decker The bitch pissed me off so in her bathroom i gave her sister a Double Decker

by tnfungi January 14, 2009

upper decker

Unleashing the biggest load of crap in the top portion of the toilet.

"I wasn't able to get a beer at this party, so I took it upon myself to give him an upper decker in the toilet".

by mark abestin December 18, 2003

Double decker

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.

She sat on my lap while I was on the toilet so we could double decker that shit.

by iAM December 14, 2013

Ryan Decker

massive peen

Ryan Decker has a massive peen

by Go Bulldogs May 15, 2019

Upper Decker

The act of defecating inside the water tank of a toilet.

Step 1: Go to the home of your mortal enemy. Ask to use the bathroom.

Step 2: Approach toilet and remove the water tank lid.

Step 3: Step on the sides of the toilet and squat over the water. Carefully take a massive dump. Wipe your ass and dispose of toilet paper in the trash bin.

Step 4: Place water tank lid back on the toilet.

Step 5: Escape.

What happens? With each resulting flush, it will fill the bowl with a chunky brown water. Its the gift that keeps on giving :)

Lady mere mere: Just took a massive upper decker

Bro: Are you serious? Thats messed up. You really know about upper deckers

by t-bozz January 28, 2013