Thumbuptomy 

The act of giving someone a "thumbs up" or one that gives theirself a thumbs up on a website.

No one was giving me a thumbs up on my report so I used the old thumbuptomy.

Thumbuptomy by Jamfetto April 6, 2009

thumbectomy 

A small surgery used to keep people in line. Used by the mafia. Also used by crazed fans who don't like the fact that their favorite author killed the main character of his series and find him in his car, all fucked up, then take the author to their house, nurse them back to health, then become psycho bitches and force the author to write a new book with a different ending...

1. I gave him a little thumbectomy to make sure he got the message...

2. HOLY FUCK MY THUMB! YOU CRAZY BITCH!

thumbectomy by JB_Finesse October 1, 2005

Thumbotomy 

(Upstate ny slang)

Thumb+lobotomy

To gouge someone's eyes out with your thumbs in order to cause brain injury or death

Dude got jumped by the crick, pulled his gat but the fuckin thing jammed after he domed two outta three, ended up getting tackled and had to give the third shipdip a thumbotomy

Thumbotomy by Fatfatfatfatfat February 22, 2023