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1.
upw
Unidentified party wounds.

You know those wicked injuries you get a party where you don't remember how you got them the next day.
Dave fell on a bottle and was too smashed to move, he's going to be concerned about the upw for sure,
by nsaene January 13, 2008
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2.
Unidentified Party Wound. An injury or bruise received over the course of an evening of drinking with no recollection of how it occurred. Generally self-induced due to one's stupidity and involving a fall, stumble or collision with an inatimate object.
"I woke up this morning with a huge U.P.W. on my thigh.... I remember smashing into a table, but one of my friends told me I fell trying to get into a cab…..I guess I’ll never know"
by R.D.P. April 14, 2007
1 4