When you have as many dicks sticking out of you as you had inside you
Dude, did you hear that Abby fucked another dude?
Yeah she's such a porcupine
When you don't shave yo sack( ball sack) after a long period of time and the hair on the sack(ball sack) grows back thick and pokes you in yo penis ( male gentalia)
Bruh..... I got major porcupine sack!
My side bitch be complaining 'bout my porcupine sack!