Definitions by Nesco

OMFGZ 

OMFGZ is an exaggeration of OMFG, meaning Oh my fucking god.
You use it to impersonate an over enthousiastic person.

Alan: Yay I can't wait to go to Rome it's gonna be so cool omg omg
You: OMFGZ YA T3H R0ME IZ DA BEZT ROFLOL

OMFGZ by Nesco June 10, 2007