The sexual act in which one person holds mentos and coca-cola in their mouth while a partner ejaculates into their mouth. Immediately after said partner has finished the holder will close their mouth and shake their head vigorously in hopes of creating an explosion. Alternately the ejaculating partner may also urinate in their mouth.
If you play your cards right I might just take you home for a mythbuster session.
by MrsGreyOwl January 15, 2018
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A girl usually seen at random (i.e. party or other daily function) who is ugly past normal standards of ugly.

Used in conversation between male friends when consulting a woman's appearance
Guy 1: Dude did you see that girl in the red shirt over there?
Guy 2: yea dude, totally mythbusted!
by Josh Eckerle May 19, 2008
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Short for, "Mythbusters that shit!"

Telling somebody to check the TV show Mythbusters as a rebuttal after they wrongly claim a myth/rumor is true.

Especially helpful if they still disagree with you after your first refute.
John: A penny dropped from the Empire State Building can kill somebody.
Brian: No it can't...
John: Dude, I read it online.
Brian:Dude, MYTHBUST THAT SHIT!!!!!!
by Marshmallowcrew October 12, 2010
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What you exclaim when somebody tries to pass off an urban legend as being true.

-OR-

What you exclaim when some ignorant mofo thinks his mind is stronger than the combined brain power of Adam Savage and Jamie Hyneman
You can't bullet-proof a car with phonebooks, you dumbfuck.

Uh-huh! They Did it on Mythbusters!
by inflatablejesusthethird May 27, 2010
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An exclamation used when disproved of something because of an episode of mythbusters. Often used in arguments between two or more people when one person says something that they beleive to be correct and another begins with "no, I saw an episode of mythbusters..."

Usually a bad thing because the winner of the argument had only to sit on their ass and watch television to win the argument.
Dad: John, roll your window up so I can turn on the AC.
Son: I don't feel like it.
Dad: Damnit, I want to save gas so roll up the fucking window.
Son: No dad I watched an episode of mythbusters and they did a test and it's cheaper to drive with the windows down.
Dad: Fucking mythbusters.
by Ninja guy January 13, 2008
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Testing common modern day myths and theories to see if they're true usually ending up with explosive results. Ranging from What happens when an aerosol goes on a fire to clinical tests into whether Man Flu is real
This week on Urban Mythbusters we try to Bust the Urban Myth of Is it possible to have sex while playing a games console... there's only one way to find out!
by Doctor Tripod February 2, 2009
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When something fails in a spetacular way that usually only happens when induced by the TV show Mythbusters.
That top fuel dragster's engine didn't just blow, it exploded like a bomb. It was a total Mythbusters fail
by Cloudchaser Sakonige May 13, 2010
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