Party Ninja
n; Someone who stealthily sneaks into a party or social gathering they weren't invited to. Party Ninjas are also known to tear up the place and abuse its resources, disappearing without a trace like a Ninja.
Dude, that Party Ninja is laying the smackdown on the keg of beer! Grab him! Wait, don't let him get a way!! Wha... where'd he go?
Party Ninja by Jin Saotome May 14, 2005
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