Jacking off in a fashion that looks like you are playing the frets of a guitar.
This guy on chatroulette had a curved dick so the only way he could jack off was by guitarin' it.
by tomtesticles December 9, 2010
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Its when a dumb nigga don't know what they doing with a pigeon and a bat, two pound of weed and a Cadillac
He Guitarin it up ova thur
by Guitarin March 14, 2018
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The obvious noise of someone nearby watching cheesey TV porn
"Oy Sam, I think Dave's Funk Guitarin' downstairs!"
by TMB June 17, 2003
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