Someone that sucks or is just plain stupid...or doesn't know how to do anything...
Normally a slang term referring to powdered cocaine. However, for people in the metropolitan Washington DC who don't know any better, this term is used to refer to powdered heroin, apparently because the term coke refers to crack here because it is the predominant form of cocaine found there.
"Where can I get a bag of blow around here?"
a word meaning something/someone genuinally bites the big one.
wow, britney spears really blows
(verb) the ability to strongly project one's voice (to "belt") while singing.
popularized by American Idol judge Randy Jackson
Randy Jackson: "Wow, dude...you can definitely blow but I don't know if this competition is right for you..."