double decker pussies 

When one has two pussies stacked one atop the other, for easy alternating insertion. Usually done doggystyle, this position is used mostly in FFM (female-female-male) porn.

Did you see Ava Devine and Alica Saint in that new Peter North flick? He stacked their asses up into double decker pussies and fucked them both, man!

double decker pussies by loose_cannon November 18, 2006

Double Decker Nut 

When you are jacking off while laying on your bed, quickly stand up on your bed before you're going to nut and aim at the floor.

Kid: When was the last time you nutted?
Kid 2: Yesterday. I tried the Double Decker Nut it was awesome!

Double Decker Nut by niganigga97 January 13, 2020

Double Decker Dick 

When two men grab their own dicks and pull them back opposite of each other and release at the same time. This releasing a shockwave.

David and Gery did a double decker dick and now their in a coma.

Double Decker Dick by Niggaeatass69 November 14, 2017

Double Decker Blumpkwich 

The act of getting a blowjob by two girls while eating a sandwich and taking a dump.

Jesse - "Why weren't you in class again?"
Rich- "I was getting a double decker blumpkwich."
Jesse - "I dont know whether to be jealous or throw up."
Rich- "Your just jealous."

Double Decker Blumpkwich by DragoonReborn October 21, 2010

double decker outhouse 

Possibly the worst invention in history. The double decker outhouse is, quite literally, two toilet stalls stacked. Although this structure conserves space, it is completely impractical and downright messy.

Bottom stall occupant: What's that creaking?

Morbidly obese top stall occupant: ... I think the floor is caving in.

Bottom stall occupant: *Sigh* ... who in their right mind invented the double decker outhouse?

double decker outhouse by double decker loo May 7, 2009

double decker twerk 

The action of twerking while on top of someone else who is also twerking. Created by Ian and Anthony of Smosh during their seven hour live-cast for their Food Battle The Video Game fundraiser

Anthony: I'm going to stand on your back and twerk
Ian: Double Decker Twerk! You ain't got S**t on this

double decker twerk by 4evannjafitr360 September 5, 2013

Double decker biscuit

A large biscuit so large it may be 4 times bigger than above average

Zack said, "I look like a whole double decker biscuit!"

Double decker biscuit by Chiara_Hunter October 16, 2017