A method of operation that is used by most automatic firearms. More explicitly, this is the process used to the cycle the breech/bolt assembly (thereby ejecting the spent casing and chambering a fresh round), by either using the recoil force directly caused by the exploding powder charge, or by diverting the expanding gas of the exploding powder charge via a gas tube and piston.
by Anonymous August 10, 2003
Get the blowbackmug. when one get heads from someone with a tracheostomy and the act of cuming causes your load to blow back on your balls
by zman1000 January 8, 2012
Get the Blowbackmug. by rod vonhugendong June 17, 2010
Get the blowbackmug. by shizzlebear September 30, 2005
Get the blowbackmug. "Walt screamed in horror and ecstacy as his anus erupted in orgasm. Without warning, the nose cone-shaped dildo exploded into the air and struck Juanita directly in her left eye, horribly blinding it forever. It was another tragic case of blowback."
by Horus Perineum, Phd June 2, 2003
Get the blowbackmug. When you have to hold in a fart due to being in a public or enclosed space (airplane, subway, car) and the fart rumbles back up into your plumbing. Over the course of several hours, a serious queue of un-expelled farts will build up, prompting an extended cropdusting at the earliest convenience.
Joey: Dude, that 8hour flight from Frankfurt was murder. I musta had about 40 blowbacks.
Chandler: Ouch. How'd you eventually clear the backlog?
Joey: I waited till there was nobody behind me on the slidewalk, and did about 300 feet of cropdusting!
Chandler: Ouch. How'd you eventually clear the backlog?
Joey: I waited till there was nobody behind me on the slidewalk, and did about 300 feet of cropdusting!
by TheRob September 27, 2007
Get the blowbackmug. I was fucking this girl and when she pulled out my dick to finish me off she aimed it the wrong way and gave me a blowback.
by DMITCH November 22, 2007
Get the blowbackmug.