describes a person who is flakey and totally ditches their friends when everyone is hanging out. They seem to alwaysflop the last minute and pull a no-show often without telling anyone.
-Dude, I don't think Aaron is coming over here.
-What? Damn, he's being hella swoo.
Swoo is a expression to say when you get hyped.if you in a party somewhere and you dancing or whatever you can say swoo.GET LIT IS BASICALLY WHAT IT MEANS.