Jealous, perhaps, of female celebrities' busted weaves, Sean Penn went to a press conference today wearing the pelt of a drowned sewer rat on his head. What does this man have against hairbrushes?

Perhaps he's so proud to have reached the middle age with a full head of hair, he insists on letting it run wild?

Or maybe he's superstitious: If he uses a comb, he might jinx it.

Or maybe he wants to make wig-wearing John Travolta feel bad. Who's "so lovely" now, sucker? [Images via Getty]