Barring a last-minute Flaming Lips concert announcement, Of Montreal probably just put on the most visually overstimulating, over the top, batshit crazy fun concert to have hit D.C. this year. Nothing was too sacred for Of Montreal, as dancing Buddhas wore gold lamé, Greek statues shook their genitalia and John McCain’s mug was pictured uttering the famous line “Here’s Johnny!” from The Shining in large cartoonish letters. It’s no wonder that the escapism of the…