thumbdumb 

Scrolling poorly on a smartphone.

He thought he could easily scroll back to the photos taken at the beach, but he was thumbdumb.

thumbdumb by Jerome Myer December 25, 2022

The Tasmanian thumbcumber 

When a cucumber that encases an opposable thumb, is shoved repeatedly, slowly, and with passion into an orifice of the body.

Evan and his dad love preforming the Tasmanian thumbcumber together, but coach krumplesack prefers to go at it alone.

The Tasmanian thumbcumber by Jaredlipp1717 May 20, 2022

thumb dumb 

The state of being while texting in which your brain is the god of spelling and grammar, but your thumb navigates a touchpad like a drunk walrus behind the wheel of a Corvette.

You: "Bro, I was texting Cindy that she took very aesthetic photos, but I spelled "aesthetic" like "assfart". Now she'll never suck my dick."

Me: "Being thumb dumb is the ultimate game-killer."

thumb dumb by Van Guapo April 11, 2015

Thumbpump 

Sticking the first didget of your thumb into an asshole and moving it around.

You thumbpump your girlfriend when fingerbanging her vagina.

Thumbpump by freakinded December 28, 2005

Thumbdobbin' 

to waste other people's time; indecisive; in the way, especially in heavy traffic conditions

As traffic became heavy, the other drivers honked at the man thumbdobbin' in the fast lane

Thumbdobbin' by KeishaLeighArt July 28, 2017

Thumbthumbs 

A cat with a serious problem. Mainly white cats. A cat with freaking thumbs

I think your dog is a thumbthumbs.

Thumbthumbs by pikachuphantom February 5, 2010

Tumbiumbi 

Having someone rub your belly sensually to help activate digestive system and help one poop.

Pooh Bear said to Piglet “Oh dear, I seem to be backed up. Let me put some Boyz II Men on while you give me a Tumbiumbi”

Tumbiumbi by whichwitch’swish April 1, 2022