When you're balls deep in a girls turd cutter and she starts fingering herself in her coochie, thus creating a rubbing motion through the vaginal wall which jerks your cock off. Hence, the Inside Job.
Girl: "Oh boy, I love it when you're in my ass"
Guy: "How bout you give me a little Inside Job baby?"
Girl: "Okay, but after you finish your homework sweetie."
Guy: "How bout you give me a little Inside Job baby?"
Girl: "Okay, but after you finish your homework sweetie."
by definictionary May 21, 2015