Hey, even the celebrity gossip world's greatest ursine specimen has to hibernate sometime. He also has to go clubbing, though.

Witness the other night. Jason Davis, a.k.a. Gummi Bear, looked like he was asleep 15 minutes before arriving at the hot club Ivy.

The result: A celebrity hairstyle you don't want to emulate ...

Jason Davis, a.k.a. Gummi Bear, rocks the trendy bed head look.