noun:
Friend1: "Hey, sorry I couldn't make it to your movie night last night,
how did it go?"
Friend2: "It was a real Urban
Dictionary. I saw what I swear was santorum oozing from Jimmy's ass, but I couldn't tell because I got angry pirated before the previews even finished."
adj:
The biology class became increasingly Urban
Dictionary as an orgy built up around the two kids who were munging with the pre-dissected fetal pigs.