South Park Fans Jonas Brothers White Foam

Any South Park fans? I discovered a little while ago that the Jonas Brothers actually did frequently spray white foam on their primarily female concert goers. Here's a clip of the foam spraying from one of their concerts: [view link] Some quotes from the comment section of the YouTube clip: "i thought this was just a south park joke. my God...." "right? then my girlfriend told me: "no, they really do that at their concerts" which is how i ended up here" A cursory Google image search for "jonas brothers white foam" yields some pretty hilarious, but safe for work results. Images of chunky white foam, a confused female with some white foam chunks on her, and a happy female with some white foam chunks on her.