If you're a lumberjack, the late Kurt Cobain or... Mary-Kate Olsen, 21. The mini-mogul celebrated (along with Nicole Richie, 26, and Joel Madden, 29) in, 90's grunge, style at some random house party.
The night's reveries included: Puffing cigarettes.
Beating on a piñata crafted by crack heads.
Posing with a fellow fugly duckling.
Pretend imminent cupcake eating.
Staring at a puddle of, what looks like, barf or bile.
Also, Richie wanted you to know, instead of booze, she opted to drink water. Smart Water.
For more pictures visit ONTD.
Update: Ok so these pictures may have been taken a while ago. That "Fugly Duckling" in the picture with MK is reportedly her EX-Boyfriend Max Snow (i.e. some dude related to Uma Thurman). Apparently the two broke up in November 2007. So, that's probably the time frame we're looking at for these photos.