To hold a marijuana joint in ones mouth between the lips with the hot end in the mouth while blowing smoke out of the hole at the other end into someone else's mouth, so as to get a big 'hit'
'Give us a blowback!'
by Anonymous July 01, 2003
By it's original definition, blowback is the backwards escape of unexploded gunpowder when firing a handgun. In diplomatic terms, it is an unpredicted, negative response against a nation in regards to a diplomatic action that country has undertaken.
The United States, through its underhanded dealings with its enemies, has caused blowback many times throughout its history, leading to bad diplomatic relations and hundreds of millions of people dead.
by QueenVee January 05, 2004
by meinubh July 23, 2012
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
by rod vonhugendong June 16, 2010
by shizzlebear September 29, 2005
"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 02, 2003