09/14/2009 AT 3:55 PM ET
Not even Simon Cowell was ever this tough.
In a mocking, profanity-filled post on her blog, former American Idol sweetheart Kelly Clarkson adds her angry voice to the celebrity chorus against Kanye West for his Video Music Awards outburst during Taylor Swift’s acceptance speech.
Calling him a “sad human being,” among other things, Clarkson says, “I’ve seen you do some pretty s—– things, but you just keep amazing me with your tactless, ass— ways. …. It’s absolutely fascinating how much I don’t like you. I like everyone.”