The constant act of a newbie using a new word they found on Urban Dictionary in their everyday social life in the hopes of maybe looking cool, but insted failing in the process.
Tim: OMG! I cant believe ISMFOF has a new song!!!
Mike: yea brah, it's derp'in epic!
Tim: dude you really need to stop Urb Dropping
Mike: BRAWWW!!!
by fameisforever April 26, 2011
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