Double DP 

This is possibly the most amazing yet terrifying sexual manuver in the history of mankind. The Double DP is a combination of double penetration and donkey punch. The standard double penetration is carried out as normal, until the moment just before climax when both males punch their female partner in the head at the same time.

This would probably be considered sexual assault and would technically be illegal in most states. Be prepared for the consequences (most likely a kick in the tesaticles)... or run away while she's unconcious.

Sly Rick: Yo, me an' Dirty Dan were takin' on this chick, we had her locked in from both ends.

Dirty Dan: Hell yeah, then we busted the Double DP. Boom!

Double DP by Fuckyourmother January 2, 2006

DP Double Pass-out

To be in the middle of foreplay with a partner of the opposite sex, on a evening (or day) when many alcoholic beverages were consumed, only to have both parties simultaneously pass out, resulting in no one getting laid.

" Man I ended up wheeling that rocket from the bar last night back to my place, but it ended up being a DP..."

"Double Penentration? You sick son of a..."

"No man, DP Double Pass-out, the worst"

"Yikes"

DP Double Pass-out by AlcoholicsAmongus January 17, 2014

Facebook DP (double penetration) 

When a person is talking on the phone or in the same room as one person, and messaging or posting messages to that same person at the same time

My homegirl and I are on the phone talking, and we are posting statuses back and forth at the same time., hey do you wanna Facebook DP (double penetration)?

Facebook DP (double penetration) by Manders85 April 21, 2011

Double Penis Relationship (DPR) 

A male homosexual couple.
Cp. to a Zero Penis Relationship (ZPR) and a Single Penis Relationship (SPR)

Did you know, Johnnie and James just started a proper Double Penis Relationship (DPR) together!

Double Penis Relationship (DPR) by ThePhysopher October 2, 2016