When you have been out drinking or breaking into houses and it's 3am, you head to the local BP for a pie what must you do????????.....what must you do???????????
Blow on the pie, or suffer a thermonuclear death!
Cop "It's 3am and your going to the BP for a pie what must you do?!
Drunken criminal "I don't know?"
Cop "you must alway's blow on the pie, safer communities working together"
Blow-on-a-Biscuit is a masturbation game that guys play where all the guys participating jerk off and blow their loads on a biscuit -- the last dude to have a cumgasm has to eat the biscuit.
"blow on my butthole" a negative comment meaning "fuck you man!" or whatever mango to hell! (most times used jokingly or when someone is janking on you)