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!"