When someone is shitface trying to puke in the toilet and ends up blowing runny turds out of their bung hole into a molasses mess.
While James was in college, some girl had a blowout in their bathroom and spewed poopies all over the place.
by mr. hankey August 6, 2004

when a female inserts the penis in the mouth to perform falacio she exerts from her lungs a thick indo cloud onto the penis creating massive smoke clouds upon the males pecker and balls.
by tymatdrew October 19, 2010

this is getting multiple haircuts (definition with energy drink and alcohol) from a woman while getting a blowjob from a woman at the same time. the haircuts do not end until u cum in the girls mouth. this obviously means the number of haircuts will vary completely from blowout to blowout.
by bigmaxx23 June 28, 2008

End of semester celebrations that occur on the last day of classes and generally involve excessive and early morning drinking, denial about upcoming exams, puking and rallying, and the making of poor life decisions. Spring blowout is generally a larger ordeal, as the weather is conducive to outdoor drinking and slip and slide and seniors like to return to their freshmen dorms to give it a little toast. Like many great legacies, such as full-contact beer pong, this festivity had its beginnings at the College of William and Mary.
"Hey, we've got to find a freshmen to let us in to Yates dorm for spring blowout this year. The administration is hardcore about locking down all the freshmen halls so we can't work havoc."
by Sabzi April 9, 2008

1. Melbourne/Australian slang for a GHB overdose. Can vary greatly in severity. Passing out uncontrollably and loss of motor skills are the most identifiable symptoms of a non-serious case. More serious cases involve vomitting and loud indecipherable yelping or yelling. Can result in death.
2. Someone that frequently overdoses on GHB.
2. Someone that frequently overdoses on GHB.
1. Carl: Did you see that dude blowout outside.
Paul: Yeh. What an arsehole.
2. Frank: Have you spoken to Sam?
Sean: No, he's a filthy blowout.
Paul: Yeh. What an arsehole.
2. Frank: Have you spoken to Sam?
Sean: No, he's a filthy blowout.
by Captain Caaaaaavvvveee maaaann June 13, 2010

An uncontrolled, poorly contained and always catastrophic bowel movement. Usually the chuncky runs. So bad that even heavy pants can't hide the mess. Food poisoning or a very disagreeable meal are two main culprits for a blowout.
In line at the McDonalds:
Joe: "Oh Jesus, Oh..."
Mike: "What? What's wrong?"
Joe: "That toddler in front of us."
Mike: "Toddler? Oh my, fuck .. Oh the smell."
Joe: "Hey lady! Your little crotch dropping seems to have had a blowout."
Joe: "Oh Jesus, Oh..."
Mike: "What? What's wrong?"
Joe: "That toddler in front of us."
Mike: "Toddler? Oh my, fuck .. Oh the smell."
Joe: "Hey lady! Your little crotch dropping seems to have had a blowout."
by Jumpingrat September 14, 2008

by horsegirlcece November 7, 2017
