While Having sex from behind (doggy Style) Place your thumb into your partners Asshole, Remove it and roll your thumb across her lower back...hints leaving her your thumb print on her ass out of her shit!
by Kelly Alexander July 14, 2006
He is all thumbs with power tools.
by The Return of Light Joker April 09, 2009
by Smkngmgc June 22, 2004
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 24, 2009
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
by CatDog6969 September 14, 2017
by Clifford D. September 13, 2006