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1.
To mean or to talk about something being bomb titties/amazing/sick/dirty.
Damn dude that shirt is murnz.

Shit man those shoes are so murnz
by kyle hartl August 02, 2008
 
2.
A word to describe something that is sweet or awsome.
"Dude i can' wait for the new xbox 360 game it's going to be murnz."

"That was a murnz night out with the buds."
by Mike Rawdin August 05, 2008