just another way to say you suck. When people are annoying you or getting you mad or even if you had plans to do things with someone and all of a sudden they cant, you respond with "You Blow".
Gosh you blow!

"Are we still going to the movies this weekend?" - boy
"No I can't. My mom won't let me out." - girl
"Damn you & your mom blow" - boy
by Tim-la March 10, 2008
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contacts are important, helping people is too, but giving people want they want is best
by jaffaw July 14, 2009
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If you're slow, you blow your opportunity.
The XYZ Company is hiring. But you better hurry up and get over there--you slow, you blow.
by G8rsRGr8 February 17, 2016
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A solid comeback for when you're getting roasted but they say a bad word so you respond with this.
Tony: you blow your father with that mouth?
Black guy from the hood: the fuck did you just say to my sister?
Tony's son: so that's a crack ho
by Kfcmaster17 August 01, 2018
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If you catch someone doing an action they are not supposed to be doing and you tell someone else to get them in trouble.

Telling on a person when they have done something they are not supposed to do.

To tell on someone.
A boy is about to take $10 from his mother's purse. His sister walks in and says, "If you take mom's money I'm going to blow you in!"
by Ruby Crystal Diamond July 20, 2011
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