Kolla upp vilket ord som helst, t.ex. eiffel tower:
 
1.
to know something, to have somethin new; mostly used to brag or to tell someone they aint know sumthin

also used: up on dis
You seen my new Jacob? Thas right nigga you aint up on dis!

I been beatin your grl for months now...you jus wadnt up on dat
av CeeCee 26 oktober 2004
 
2.
To 'bang,' have sex, or otherwise canoodle with. Presumably another person, a sexy one; but could also be used in an ironic fashion for an object (tangeable or otherwise) which is particularly awesome.
"Man, that girl is hot."
"You wanna get up on that?"

or:

"Holy crap, this song is awesome. I totally want to get up on that."
av lizzi 18 maj 2005