by Anmys May 14, 2024

Thumb me dumbly is the acting of taking the nearest mentally challenged person (or group of persons depending on how fucked up you are) and having he/she/them insert their thumbs into your anal cavity
Guy 1: so what did you get up to last weekend bro?
Guy 2: I went to the loony bin and got a few retards to thumb me dumbly
Guy 1: you’re a sick little cunt you are
Guy 2: I went to the loony bin and got a few retards to thumb me dumbly
Guy 1: you’re a sick little cunt you are
by Hugelymassivedick February 14, 2019

The use of one's thumbs to herd cows on your ipod in the game Cows vs. Aliens. Whereas, on the ipad, the use of all fingers is possible.
by Brain Stew July 24, 2011

by Txayvs April 11, 2022

keeping a tad bit of cum/semean in between your pointer finger and thumb to wipe on someone/something later in day
“bro i wiped a thumb slug on brad after he called me a dick today”
“dave mad fun of me yesterday so i’m going to cum thumb slug him today”
“dave mad fun of me yesterday so i’m going to cum thumb slug him today”
by D the P slayer August 19, 2021

When you're hitting it from behind and your slap her ass, to which she responds by yelling "just stick a thumb in it!"
by Captain Hazelwood May 20, 2021
