look up any word, like cleveland steamer:
 
1.
To fuck a girl (or a guy, if thats what floats your boat)
JL: Yo who thats girl over there?
GM: That's DJ's cousin, nigga
JL: I don't give a shit, I'd jump on that, I ain't scared of that nigga
by huh? December 29, 2004
 
2.
When someone & their friends fight someone instead of seeing that person "one-on-one"
Why did all of those girls have to jump on Brooklyn?
by prettypatty September 04, 2011
 
3.
verb: Acting quickly over the whole area or extent. Everywhere. Not leaving room for error.
You asking me if I would take that job? Oh,I would jump on that like a dog on a three legged cat!
by 1.g.r.i.t.s. March 18, 2009