"I bet you never seen b*tches twerk on water. My b*tches twerk on water," Rihanna emphasized in the behind the scenes footage for her "Pour It Up" video. Indeed, water clappers were one of the many attractions shown on set. When the official video drops, we can expect to see professional pole dancers glowing in the dark, a scantily clad Rih Rih, dollar bills with the Bajan bombshell's 'R' signature, and yes, massive rear ends splashing in shallow pools. Take a peek at the party above.