Now for those of you who don't watch copious amounts of pornography, "DP" means double penetration. Double penetration normally happens when one guy puts his penis in a woman's vagina and then there is another man who puts his flipstick in the same girl's junkhole.
If a man was born with two penises if he could perform "DP" by himself? Or is one of the fundamentals of "DP" inevitably having one man's balls touch another man's balls while filling two orifices?