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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When a guy cums so hard, he ejaculates into his own face.
Dudes, I hella thought she was going to swallow, but she totes made me backfire.
by LisaHero November 11, 2007
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when a guy cums hard enough to blow his load into his own face.
I thought she was going to finish the job, but she pulled off early, and I backfired.
by Jake the Ripper November 18, 2007
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When a guy receives a blowjob and cums so hard it hits him in his face.
Dude, I was getting this wicked BJ and I thought she was going to swallow, but she made me backfire.
by suchalamerequirement November 5, 2007
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To hit back.

When you are clogging the toilet with your massive, brown logs of divine terror, the brown water that splashes up on your butt and balls is known as a "backfire".
by Quakeulf October 30, 2005
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