thumby monster

It's a digit that is employed in the butt.

There's a thumby monster around.

by Kublai Khan October 27, 2003

Thumby

The act of violently inserting your thumb into someones rectum.

person 1: So how did you get that black eye?
Person 2: I ran up on my girlfriend and gave her a surprise THUMBY.
Person 1: Oh that was stupid.

by Ancient Armadillo June 17, 2018

thums up

A beer bottle that has been stuck up a girl's vagina.

-Can you hand me that beer?
-Man, I dunno if you want that, Cindy took it in the other room earlier
-Fuck! Why do all the bottles here have to be thums up?!

by Colie May 14, 2005

Thumby

sticking a thumb up a man's ass just before he climaxes

Oh girl I am about to finish, gimme a thumby!!

by Bundestag May 29, 2018

Thumbsy-Bump

When you and a bro each stick their thumb up their ass and bump knuckles while turned backwards

Me and and the bros always thumbsy-bump at the end of a party. Last night me and kyle did a frontwards thumbsy-bump, our dicks touched but no homo.

by Thumbsy-bumper June 19, 2019

Thummy

Thick and yummy

Dang, that girl is thummy!

by leeeceee July 17, 2020

Thumpy

A male ass that had feminine qualities and jiggles while walking

“Dude look at him , he’s got a thumpy!”

by Lil_Whiteboy November 21, 2021