חפשו מילה כלשהי, כמו fleek:
 
1.
Anal sex, or back door entry.
"Man, I was knockin poop all night with that slut, Nick. He answered his back door with some shit that got all over my dick"

"Did you guys get the poop knock on last night?"
מאת Aaron and Jacob 15 במרץ, 2008