"He's trying to destroy his career," Corgan tells Rolling Stone. "Rather than take a year off or change his musical direction, some part of it is irritating his soul to the point where he's trying to blow it up.
"There's things you should really just keep your mouths shut on," he adds. "There's things that should just be left alone."
For Corgan, at least, Mayer is obviously not one of them.
Something tells us Corgan is probably OK with Mayer being featured in our What a Douche gallery.