Manghole is a word used to describe a friendbeing an ass of sorts. when you are so utterly tired of being called mang, you call them a manghole as a reply to such gestures.
1. Cast metal circular cover providing access to an urban sewerage system.
2. Male orifice, typically the mouth but also could refer to the anus or butthole.
"You are talking out your manhole homes."
"Dude you want to keep your manhole covered or someone's gonnacap your ass."
Right after your ass fucking someone you pull your dick out and lay your balls on their gappingasshole.
Markcame home to Manahawkin opened the door to find the Manahawkin Manhole Cover happening in his bedroom right when his friend was covering his girlfriends ass with his balls