Top Definition
An explosive unintended defecation that occurs when one relaxes the anal sphincter to fart, with a twist.
After my fifth bean burrito, and three cups of coffee, my bunghole released an EF5 Shartnado that leveled my pants.
by ScooterDnSC July 08, 2014

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A violently loud, gas-infused bowel movement that causes poop particles to spatter in a nondescript pattern along the inner walls of the toilet bowl and, in rare cases, on the underside of the toilet seat.
Despite Consuela's best efforts, she was unable to clean the bathroom after the terror that was Matthew's shartnado.
by GBone August 01, 2013

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The act of doing a headspin whilst simultaneously having an eruption of fecal matter and gas that sprays in all directions.
While practicing my headspin technique, what I thought was a fart turned into a shartnado of death.
by HeroZero October 10, 2014

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the feeling of having uncontrollable butt spray, usually caused by the consumption of grease, fat and alcohol.
Two bites into that chorizo taco and I knew I was about to shartnado my pants.
by IzzyLong August 08, 2013

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Shartnado: when you are trying to get to the toilet but you repeatedly shart every step of the way to it.
I sharted in my shorts but as I tried to quickly get to the bathroom I was caught up in a shartnado.
by Rozzysed August 06, 2016

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A defense mechanism, not unlike a squid releasing ink, wherein the cornered prey releases a flurry of flatulence and feces in a panicked attempt to distract, confuse, and evade an unrelenting predatory attack.
Wow, Spicy’s press conference is fubared, and they’ve already used up the alternative fact defense, so what’s he gonna do?
Only one card left to play man… the Shartnado. Stand back.
by Mr. Surly February 06, 2017

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An explosive shart.
Phyllis did the mucho burrito and a shartnado ensued.
by 3nothappening January 01, 2016

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The Urban Dictionary Mug

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The Urban Dictionary Mug

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt