A Human Flamethrower is where a take a large syringe and fill it with alcohol. You then stick the syringe down the tip of your penis and inject the fluid in. After injecting you hold a lighter at the tip of the penis and piss out the alcohol causing a Human Flamethrower.
Damn, grandma you didn’t tell me that pops did a Human Flamethrower back in Vietnam.
by Lord Scrotum January 22, 2021
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The act of eating a large amount of beans, broccoli's, onions, or what ever it is that gets you the most gassy. Next step, take a light jog to get it all mixed up. Now assume the 69 position, once you start chowing down and the urge to fart hits you your partner is required to light that jurnt on fire. If a fart happens to hit both of you at the same time and they are both set a flame this is considered to be a higher achievement.
Co-employee: Dude, why are you missing half of your beard, an eyebrow, and a small patch of hair?!!?

Employee: Duh, I pulled of the 69 Flamethrower last night... It was an inferno!
by IMBACK! April 24, 2010
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Have you ever eaten Taco Bell and lit your farts on fire?
There was a shortage of flamethrowers in WWII. Fortunately, Mexican food was abundant, so Allied soldiers would eat the delicious shit and hold matches under their asses to fry the hell out of those fucking Nazis. This was the invention of the Mexican Flamethrower.
by ThisAssHole October 27, 2009
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When you eat large quantities of wasabi and you get a sudden feeling like your gunna take a dump and you run to the restraunt bathroom and have fiery asshole when you piss out your ass with poop and it feels like your shooting flames out yours ass.
Dude i ate soo much wasabi that i had to rush to the bathroom and repaint the toilet. it was the worst rusty flamethrower EVER.
by xXvalcoreXx December 6, 2009
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When your violently shiting and your asshole feels like its on fire.
"HELP I ATE 7 TACO BELL BURITOS AND A WHITE CASTLE CRAVE CASE AND NOW I HAVE FLAMETHROWER ANUS"
by Winston Churchill December 5, 2021
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When a man lights his testicles on fire and puts them in a women’s mouth to extinguish them.
Guy 1: Hey man how was your day yesterday?
Guy 2: Good me and my girl did the Iowa Flamethrower last night.

Guy 1: Nice
by ILikeCorn772 February 27, 2022
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You fill a man's asshole with a tank of propane until the stomach expands. You then prepare a lighter at the asshole and push on the man's stomach causing a massive explosive stream of shit and fire.
Timmy thought it was a good idea to melt the ice on a lake with a human flamethrower.
by LuciferKing666 May 21, 2022
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