When a man sits in a pie, and wiggles around in it.
Other terms for it are "Full Moon Moon Pie", "Boston Creme Splat", and "Dutch Apple Ass".
"Daniel would make these... well, "fetish videos" for his friend, nothing illegal mind you."
"And what would he do in them?"
"Y'know... squat cobbler. What, you mean to tell me that you're a cop, and you don't know what squat cobbler is?"