A sexual act involving nutting inside the vagina at the same time as she queefs, blowing the cum back all over the male’s genitals.
Danielle timed up a powerful queef and gave Joe a Cumtucky Backfire that required a lot of tissues to clean up.
by Goochie Gang November 17, 2019
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An event in which someone gets re-acquainted with a favorite song, movie, or other thing from their past, but eventually finds that it only reminds them of the time at which they got back into it.
My junior year of high school, I went up into the attic and found that Super Mario game I used to play when I was, like, 10 years old. But now when I play it all I can think of is how it was the one thing about my high school days that didn't suck. What a total freaking nostalgia backfire.
by OneMileFromGlory December 7, 2011
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when you cum in a girl's mouth and she spits it back at you
Dude, I blew my load in this chick's mouth the other night but then she tennessee backfired
by BoiBlue February 23, 2012
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When you drop it low at your family BBQ and shit in the potato salad.
Dixie what's in this potato salad? It's so good!

The special recipe, backfire dip!
by Jenbaby0 March 22, 2017
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When upon taking a small to moderate dose of NyQuil or other OTC sleep aids which contain antihistamine as an active ingredient the ingested pharmaceutical produces undesired side affects such as jitteriness and/or increased heart rate which counter the intended result of sleep.
There is no known cure, treatment is focused on achieving sleep. Common treatments include: large quantities of liquor/cheap beer, more of said pharm, marijuana, drugs...
Man I really wanted to sleep before my flight but i had a NyQuil backfire and I was up all night with a dry ass mouth...
Yo I fuckin hate when NyQuil backfires, fuckin stresses you out the whole next day
by lostmonster March 19, 2009
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you give that ho a rim job so good that her o ring breaks and you get (old customers) semen blasted in yo face
"eww fuck i just wanted to try something fresh not get a prostitute backfire"
by cc collision February 20, 2007
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When you’re banging someone in the butt in a Volkswagen and it backfires and the person Shits your dick out.
Dude, last night I got A German backfire in my Jetta.
by Wiiner June 5, 2019
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