Peanut Butter Cup!

When a man's fucking a girl in the ass and she shits on his dick. At the time he pulls out she puts peanut butter in her mouth and sucks his dick aka peanut butter cup!

Steven: "I got Tiffany to do the peanut butter cup last night."
Lee: "that's gross but you're legendary"
Steven: "her mouth was filled with peanut butter and " chocolate ".
Lee" Peanut butter cup!"