An action in which one does not stop texting
"I am trying to talk to her but she keeps thumbin' on her cell phone"
by Taryn Kerrick Zimmer May 23, 2008
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n. the use of the thumb to stimiluate the female anus during sexual intercourse; applied while in doogy style.
Ooh daddy, keep thumbin, 'cause I'm comin'!
by Joseph Momma November 8, 2003
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Guy 1: "Bro who you thumbin right now?"

Guy 2: "That girl from last night she keeps blowing up my phone"
by Reppin516 July 8, 2014
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a dance move similar to the choo choo but done with fists with the thumbs up while leaning back from the waist to give the impression of being laid back
A typical night out for James and Bondy would involve a thumbin' session at the Bull
by hernandez chambero August 21, 2008
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The act of rolling on the floor in your bathroom while thumbing your asshole. This excludes any time after you have received a blumpkin.
" I saw Devontae through his window thumbin' it yo."
by Harrison Stevens August 4, 2005
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The art of standing around with your thumb up your ass. Doing absolutely nothing at all.
Ryan, quit thumbin' around and start playing!
by mcniggleston October 17, 2013
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