When you're browsing Urbandictionary.com and you see a very old definition that still has little or no votes. You then vote it up out of sympathy, much like in reality when you see a hobo without money.
He felt on top of the world when his first Urban Dictionaryword, urbandon, was added. But as the weeks passed, it turned to despair, as there was only one thumb, and it was not up. How ironic that they should urbandon his word!
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.