A person--usually a married co-worker--that uses the company Christmas party as an opportunity to get extremely drunk and dance inappropriately on other co-workers' spouses, usually leading to embarrassment the next day.
Todd: Dude, Steve is all over the boss' wife
Phil: He's such a Christmas Partyhoer. That's going to be awkward tomorrow.
Phil: He's such a Christmas Partyhoer. That's going to be awkward tomorrow.
by T Macalicious December 9, 2010