Who would it be? Given that the audience for The Hangover was meant to find this person HIGHLARIOUS, I was guessing Brett Favre, who, of course, already had the opportunity to show off his fine acting chops in There's Something About Mary and additionally has the highly-desirable quality of treating women like garbage.
I was close!
Today, the New York Post reports that the mystery cameo-man is Mel Gibson.
A source told Page Six, "It's a done deal. Mel will make a cameo as a tattoo artist. Filming is taking place on the Warner Bros. lot, where a Bangkok set has been built, and Mel is expected to film his role in two weeks. Then the production moves to Thailand at the end of October."Of course. Why wouldn't it be Mel Gibson?
I just hope they can persuade Roman Polanski to direct the inevitable third entry in this estimable franchise.