to bring a result opposite to that which was planned or expected.
They never learn even after all the games they play continue to backfire on them.
by Goddess12* December 22, 2013
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When a man is receiving a blowjob and upon finishing inside the mouth of the giver, the contents are spat back in his direction.
Last night my girlfriend backfired all over my chest!
by Emmett T March 2, 2010
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After a really serious depressing prediction about the future of an old pensioners death the definition is when the old pensioner makes a funny remark which ruins the seriousness and brings the convocation back to normal levels.
Psychic: you will burn in the fiery pits of hell for the rest of eternity....


Pensioner: I'm not boiling in no freaking coldron

Psychic: well that was a backfire
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The prefix given to an internet thread predicting the future that fails miserably, causing lulz.
PackedLunch's thread just got a Backfire tag
by MorganAshlee February 28, 2015
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When the intended consequence of a corrupt plan to set someone up does not go as planned, and instead you are exposed with concrete evidence of your misdoings.
" They stalked, harassed and even spied on him but their plan backfired because they dropped their camera running off the property they illegally trespassed on and he was able to prove the harassment finally."
by ParentalAlienationIsAbuse August 14, 2017
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This is when a guy ejaculates into a girls ass, followed by the girl blowing the load back onto the guy by farting.
Man, you wouldn't believe it last night I finally got to do anal to my girl but she totally backfired in my face, yep rough night.
by Hydro24 December 2, 2009
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Any variety of outdoor fire pit or fireplace located in a backyard. A backyard fireplace, i.e., backfire
Hey, stop by the store on your way over here and pick up some dang marshmallows... I'm starting up the backfire!
by crispernaki July 4, 2014
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