Mentrance 

An entrance for men (a gay man's anus)

Billy got it in his mentrance last night for the first time. I think it's safe to say he's officially gay.

Mentrance by Tyrone Demery August 24, 2009

tradesman's entrance 

The arse.

Mr Winton wants to deliver the sausage to the tradesman's entrance.

tradesman's entrance by Ian Chode April 4, 2003

trademan's entrance 

Typically refers to the backdoor and is usually used as slang for anal sex.

So I tell the swamp donkey to sock it before I give her a trunky in the trademan's entrance and have her lick me yardballs.

trademan's entrance by Davenpro October 17, 2005

Trades Man's Entrance 

Trades Mans Entrance, The Back Pussy, The Poop Bridge, The Bourneville Blvd, The Bakerloo, Cannock Chase, The Bottom, Arse, Ass, The Rusty Sheriff's Badge, The Brown Starfish, The Gary Glitter, The Hershey Highway, The Backdoor, The Brown Eye, The Fuzzy Snuggle, The Rear Admiral's Daughter.... The Glory Hole

Father O'Malley lounged dreamily on his chez long, thumbing his holy book, recounting to himself a lost weekend with Italian sailors on shore leave;
"Luigi rattled my head board like no altar boy could. By Monday morning my Trades Man's Entrance flapped like a wind sock in a force seven gale".
A life in Holy Service. Father Seamus O' Malley. Penguin Books. 1932.

Trades Man's Entrance by Da Dirty South April 12, 2008

batcave entrance 

A vehicle entrance to a facility that is obscure and infrequently used. Often the only people who know of this entrance are the employees who work there. Golf courses, farms, industrial parks, sports facilities and outdoor museums often have batcave entrances. Management often frowns on use of this entrance. This term is inspired by the "Batman" TV series from the 1960's. In that program, the entrance to the Batcave was down a little-used dirt road that was blocked at one end by a fake wooden barrier.

My boss told me I had better not be late again, so I had to use the batcave entrance to get to the office on time.

batcave entrance by Led Zeppole October 30, 2003

Slimy Entrance

When you nut for weeks on the door knob and the rest of the family/roommates haven't even realized yet since they grabbed on it.

Mom, dad, I got some news : Y'ALL GOT SLIMY ENTRANCED! OH! YOU JUST GOT SCREWED, MY GUYS!

Slimy Entrance by Goldenhat April 14, 2020

mentalcel 

A person, especially a man, who has failed at dating because of mental impairment.

Joe: You claim to be an incel, but you sure don't look like one.
Henry: I'm a mentalcel.
Joe: Mentalcels are fakecels.

mentalcel by anonymous November 19, 2020