Bully: I told you to stay away from my girlfriend's pussy (your mom) or you'll get punished. Your mom fucked your toothbrush and said she's gonna spank you if you don't brush your teeth as well. Either way you lose. Such is the life of a wimp.
Your mom went to talk to your bully's dad about his son but ended becoming their family whore, look how she sucks him off as your bully fucks her pussy.
Not really free use pussy's, but cheap enough for a quick fuck. Your mother and sister get used like the bitches they are and your bully gets some cash. It's a win win.