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1 definition by monkey442

 
1.
USB
Un-Solicited Blowjob - When a girl (preferably) decides to suck your cock without any request, suggestion, hinting, or begging from you. A wholly independent action undertaken by a woman to put your johnson in her pie-hole.
"Dude, I was just watching the game on TV, and my sister's friend Shiela walked over and gave me the best USB!"
by monkey442 October 26, 2011