look up any word, like bukkake:
 
1.
when someone is doing poorly, or ruining something.
Nathan: "did you see Tye actin like a huge faggot yesterday?"
Will: " Ya i did, i was tryin to run my game on yellz and he was fuckin blowin it"
by Mike Norris October 29, 2007
 
2.
Someone who really just fucked up, or may fuck up in the future.
Don't BLOW IT man
Dude, your BlOWIN IT
by Grant Wasson March 15, 2008
 
3.
when your not on it
When a chick offers you to suck on her titties and you don't. Your blowin it.
by kalamasses October 08, 2008