Usage: either as two words (throw down) or one (throwdown).
1. noun - Uncommon passion when having sex, making out, or some other form of sexual contact. Usually involves groping or aggression, sometimes growling, and varying degrees of being on the edge of losing self-control.
2. verb - to make something happen in a big way. to perform well, brilliantly, with virtuosity.
3. verb - to drink. a lot.
4. verb - to fight and win. Losing a fight should not be referred to as "throwing down."
"Wow... he's such a quiet guy. Who knew he'd have that kind of throwdown?"
"That band was off the chain! They threw the f**k down!"
"Oh, it's been a long week. I think it's about to be a case of the doublefisted throwdown with that case over there."
"Ooh... That dude at the bar was chattin' up the wrong girl. her man was about to throw down."