Who's Really "Silly?"

Uh oh...who's the REAL silly boy? We told you about the track Kanye West posted on his blog featuring Rihanna and Lady Gaga. Now E! Online reports that Silly Boy -- originally thought to be about Chris Brown -- doesn't even feature the singers. Lady Gaga's rep called the song a fake, and Rihanna's spokesperson confirmed it wasn't her. Naturally, Kanye has been mum on the subject.