Shit the Shaft
When your partner shits on your penis as a outcome of anal sex or because of your fucked up idea of an kinky fantasy.
I let Anna Shit the Shaft to try and spice things up in the bed room.
Shit Shaft
Is another name for a Poop Chute or ones Anus. Often heard being muttered by Sandy or Paddy G in conversations with 'innocent' Birds around from the night before. Also commonly used when reaching in 20+ knots of wind, in fireflies, while in a winning 1,2 position in team racing on Dublin Bay.
Man I just dropped a load through my Shit Shaft. I fucced that bird in the shit shaft last night
shit shaft
What your dick is after you fuck someone up the ass.
After I fucked that breezy's ass, i had a shit shaft!