thumbstom 

the ancient and effective martial art of striking an opponents stomach with one’s extended thumb. Most often used today by middle schoolers attempting to prank each other.

“Yo Matthew, I just used thumbstom on Chad in the hallway and he is still buckled over in pain lmaooo”

thumbstom by mcburgerton69420 November 29, 2022

thumbsturbate

A masturbatory technique characterized by the use of a single thumb as the sole agent of action. Requiring high levels of mental focus and physical stamina, this ergonomically problematic style of masturbation is exceptionally inefficient, as the thumb provides little stimulation and success is dependent on the performer's ability to non-bodily induce ejaculation. It is also known to cause weather to change wildly, likely due to the disturbance of the laws of nature involved in the process. Citied as a major cause of global warming and climate change.

It has only been performed successfully once in recorded history, at high cost to both the user and the environment.

"hey did you thumbsturbate earlier, cause El goddamn Niño just wiped out Canada."

thumbsturbate by littleretardcar October 17, 2009

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

thumbstream

The series of web pages which have been positively rated by someone on a social bookmarking website.

On stumbleupon.com, users show that they like or dislike sites recommended to them by the StumbleUpon service by giving a thumb up or thumb down. Hence, "thumbstream".

There is an extremely high percentage of top quality links coming out of Pistos' thumbstream.

thumbstream by Pistos August 1, 2007

Thumbscope 

When doing a chick doggy-style and you are too drunk to find the hole, you use your thumb as a marker. Put your thumb in the hole that you want to go into and use it as a guide for your penis. Also works well in the dark.

I was so drunk I had to thumbscope that chick just to find the hole.

Thumbscope by Tyny1979 February 5, 2010

thumbstruck 

a state in which one is at a loss for all words to text, tweet or type.

When Katie read her hero Ben's text inviting her to the game, she couldn't even respond with an "OMG". She was absolutely thumbstruck.

thumbstruck by meatlocker October 10, 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