When somebody has an explosive bowel movement, and it splatters all over the toliet.
I wondered why there was such a horrible smell after Scott when to the restroom. Then I went in there and saw he had a major blowout that went all up under the toliet seat and beyond.
by Can't take it no mo September 5, 2008
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The action happening, or "of" the front are of the pants being ripped or torn do to the pressure of an Exuberantly Powerful Raging Erection. Usually known to be found on the very well endowed man of 15 lovin' inches or more!
Ex1

Man 1: "Do you mind showing us your brests?"

Woman: "Sure!"

(women takes off shirt, seconds pass by...)
Women: "Oh what the hell! what the hell just happened, what is that!?"

Man 2: "What girl, you aint never seen a BlowOut before!? Fa fafa Phresh!!!!!!!!"

Ex2

Man1: "Wow, look at the size of the rip in that kids pants man!!!"

Man2: "Damn! Its right where Frien Frank is to. Ha! You know that stud had a BLOWOUT!"
by DeBo Phresh N Step June 8, 2010
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A blowout is a hairstyle for boys usually worn by hispanic and black people.
Yo u seen that niggaz blowout?? Nigga looks like dragon ball z.
by dreone May 1, 2003
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A second-wind party held by Bi Kappa Psi fraternity at Ohio State involving large amounts of alcohol, drugs, and hazing. This event usually occurs very late at night when brothers and guests have returned from the bars and are most intoxicated.
Brother 1: Wow that blowout last night was intense..
Brother 2: Yeah I know, I can't believe someone got naked and stole a cornhole board and smashed it in the basement.
Brother 1: Yeah or when we waterboarded that guy..
Brother 2: Holy shit I totally forgot about that, I was so high.
by tommy555 December 8, 2015
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Something that can happen with your rectum if you try to lift too much weight.
Jim tried to bench 400 lbs and that jive turkey had a blowout. Shit and intestines all over the place.
by Nettled October 22, 2003
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At William and Mary, this is the last day of classes each semester. Everyone suspiciously carries water bottles around all day and gets raging drunk and goes to classes. Teachers know everyone is drunk and usually lets class out early.

Spring blowout > Fall blowout
ex: "Dude I'm so siked the last real day of classes was today. Tomorrow is blowout so we won't learn anything anyway!"
by ontherighttrackbaby April 24, 2011
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When a fake tit deflates or pops and loses the silicone or saline...
Jenny felt lopsided and realized she had a blowout - here fake titty deflated.

Hey babe, your left tit looks small - did you have a blowout?
by B. Hanback January 29, 2010
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