What is Backdoor Boogie?
1.
A porn made in the 80's in which two men try and fit their members inside a female's anus simultaneously.
The one great line from the movie is, "Come'on Barry, I bet we can get both our dicks in her at once."
Barry really stuffed that chick in Backdoor Boogie.
2.
Refers to sex between two gay males, or anal sex with a female.
"We did the backdoor boogie a couple of times last night."