When two guys fuck the same chick in the pussy or ass or mouth at the same time. Also, when two chicks use strap-ons or other sex toys to fuck a guy in the ass or mouth at the same time.
Joe and I will double fuck her after the party.
Those chicks want to double fuck joe after.
You know how you can now put any of your favorite photos on the frosting of birthday cakes... well the BCDF (or Birthday Cake Double Fuck) is when you have a local bakery put your favorite photo of your woman on a birthday cake. You then cut that picture out of the cake and place at the entrance of her pink hole and fuck the hell out it.
All my girlfriend wanted for her Birthday was a cake, so I got her a custom cake and later gave her the Birthday Cake Double Fuck....call me old fashion, but that's romance!
When you have a closing shift but you need to open the next day. Also called clopening.
Dan Schneider: "What do you mean you have to work tomorrow morning? Didn't you just close?"
Rob Dyrdek: "They hit me with the San Diego Double Fuck man. I have to go in again."