Thumb Chum

A deliberately provocative or inflammatory posting on Facebook, MySpace, or other social networking sites that has the sole intention of inciting an online argument. Such postings often dare others to repost or give them a "thumbs up" by challenging the viewer's patriotism, religious faith or sexuality.

This Facebook posting is total Thumb Chum: "Cannibalism is awesome! If you don't repost or like this, you are un-American, hate Baby Jesus and are gay!"

by Boggamemnon January 7, 2011

all thumbs

very awkward or inept, not dextrous

He is all thumbs with power tools.

by The Return of Light Joker April 8, 2009

green thumb

(n.) An expression used to describe someone's affinity/skill at gardening or growing plants.

Jillian has quite a green thumb; look at her tomato patch!

by Smkngmgc June 21, 2004

thumb boosting

the act of giving an urbandictionary definition a thumbs up on your work computer, home computer, and your iPhone every day. it certainly does add up after a while.

Fred kept thumb boosting his definition of "love" every day for 2 years until it had the 5th most thumbed up definition of the word.

by brett69xxx September 23, 2009

crack-thumb

The inevitable deterioration of skin located at the thumb print area of the appendage caused by continuous use of a cigarette lighter to smoke crack cocaine or methamphetamine.

Jacob's family agreed that he was back on the dope by the reappearance of his tell tale crack-thumb.

by AUSMERZUNG ENVISAGER May 31, 2014

thumb in butt

To jam your thumb in the anus and make her scream daddy till she cums

I gave her the thumb in butt broski.

by CatDog6969 September 13, 2017

black thumb

A wannabe gardener who kills plants. Opposite of green thumb.

I have killed all the plants in my house. I must have a black thumb.

by Clifford D. September 13, 2006