Thumbass

An individual who achieves orgasm by inserting their own thumb in their ass

“I really liked him, until We were in the bedroom, where I learned he was a thumbass”

by thumbass99 July 26, 2021

thumbass

someone who texts while driving

some thumbass drove off a bridge and drowned the other day.

by RiskyDevil February 26, 2010

Thumbass

A person who; Is exceptionally stupid, Exceptionally thumb like in appearance-Oft bald or Rectangular- or even just exceptionally annoying- usually purposefully so-.

Ex.1

“God, Greg, You seen those recent photos of Musk and Dwayne”?

“Yeah dude, They look like such thumbasses honestly.”

Ex.2
“Damnit Mark! You fucked it up you thumbass!”

“Hey its not my fault you didn’t tell me to check the pressure gage.”

by Shit Tikler April 28, 2024

Thumbass

When saying "dumbass" is too rude, saying idiot is too serious, and you feel like they would thumb themselves.
Basically an idiot who fingers himself with his thumb.
Could be a she, but used against is more powerful but less rude because it sounds silly.

Bob: guys, what the square root of 2 is 1, right???
Dave: no, thumbass, it's 1.41421356237 simplified heavily.
Bob: it's definitely rational though, right?
Dave: …
Bob: right???????!!!??!?
Dave: this is peak thumbassery...

OR

John: Bob, are you gay? I saw you eating a burger.
Bob: how are those even related, thumbass? Get your head straight and be straight, it's obvious that you are extremely gay for Dave.
John: no I'm not... *blushes very annoyingly)
Bob: SHAJOFUGINMOUTH

by applesaue September 16, 2025