Of Montreal have done the impossible -- they've figured out a way to become even WEIRDER.  This week is the dawn of a quick east coast mini-tour for Kevin and the gang, and last night was the tour opener at the Highline Ballroom.  Most fans expected the tour to be a testing ground for tracks from the band's forthcoming album, due in the fall.  Those fans were right.  In fact, one of the tracks -- the innocently-titled "Teenage Unicorn Fisting" -- is already making its way around the Youtube circuit.  Some fans were hoping for a cameo from Solange Knowles, Beyonce's little sister and outspoken Of Montreal fan.  Those fans were right. Solange jumped onstage and duetted with the band on a cover of The Jackson Five's "I Want You Back."  What NO fans were expecting was Academy Award winning actress Susan Sarandon (Dammit, Janet!) hopping onstage to spank the hell out of some guys in pig costumes.  Go re-read that last sentence.  We're not making it up.  Don't believe us?  Stereogum has the whole thing on tape.