thumb thing 

when you're holding someone's hand, you rub your thumb against their hand. it feels nice and gives a them a comforting feeling.

Friend: "Did you do the thumb thing???"
Other friend: "Yeah, I did, I think they really liked it. They must've fallen in love with me because of it!"

thumb thing by ValentineeeeeeG. April 7, 2021

thumb thigh 

The meaty part of the base your thumb.

I ran out of room on my forearm for lipstick swatches, so I had to use my thumb thigh.

thumb thigh by CannolisMom November 29, 2017

thump thang

the code word for guns originated in the hood. means business

"Ay blood if you keep gettin at me imma handle sum business"
"You ain't about shit."
pulls out the thump thang

thump thang by thee Maxine November 7, 2007

thumbching 

The act of punching someone in the butt with thumb between the fingers of the clenched fist, penetrating the butt hole with the thumb.

Ooooooh you just gave me a right proper thumbching

thumbching by Dice life October 11, 2015