The act of consuming a cocktail of illicit substances, spreading it amongst a group of friends lasting 48 hours or more.
shi man call Jason and see if he wants to come over for a mad g up, everyones doin it.
Ruffy: what did you get up to for the weekend?
Massive bo: Had a dirty big g up at my place, it was chong nezzy, aqueezy was there.
Ruffy: what did you get up to for the weekend?
Massive bo: Had a dirty big g up at my place, it was chong nezzy, aqueezy was there.
by sean n dom May 21, 2007

To accessorise one's person with a large quantity of branded, loose-fitting clothing and gold jewellery in the manner of a rap superstar, because you think it's cool.
by Tom August 5, 2004

To make someone feel bigger, better, than they really are.
To lie and shmooze someone in order to take advantage of them.
To lie and shmooze someone in order to take advantage of them.
Sometimes you gotta G up people to get your slice of the pie.
Yo that chick g'd you up for a free drink on your tab, sucka.
Yo that chick g'd you up for a free drink on your tab, sucka.
by Ragingclown September 20, 2013

g refers to the term "game" which is the ability to use some method to get a girl or guy to like you.
by critical February 15, 2005

by $padez September 4, 2006

by Nate Drive August 4, 2007

by Sloppeeman December 20, 2006
