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1.
Noun--The act of riding on the back of a harley davidson motorcycle with a biker dude and calmly reaching your arm around his torso in order to jerk him off, while feeling the vibrations of the motorcycle on the bottom of your sack.
"Oh wow dude, look at that biker!! You want to give him a harley handjob!!!"
by Harleyhandy June 12, 2009