Find a recently buried dead person of the opposite sex. Then you slit open the ass-hole and make a really big hole. Then you stick your head in and "bob for organs."
Sup dawg, wanna go bobbin for apples tonite!
When you insert your, and only your balls into a woman’s backside.
“Yo Cade totally dipped cotton candy apples with Julia last night.”
“He did what!?”
“When you put the balls in the behind? That’s bobbin’ for cotton candy apples”