On tonight's Daily Show, Jon Stewart had gay marriage on the mind. Stewart started off by mocking Rick Santorum for the lame analogies he turns to whenever he's asked to explain why he's against same-sex marriage. Stewart's focus then shifted to President Obama's apparent flip-flop on the legality of the anti-gay Defense of Marriage Act. "Ah, the best of both worlds!" said Stewart. "The administration won't defend the indefensible—they will, however, enforce the indefensible."