Last night on Late Show with David Letterman, Regis Philbin demanded more of the late-night host's "strong," "stupendous" lips he had felt Wednesday on Live. Letterman, however, responded with another kind of tongue-lashing — "You're a slut!" he exclaimed. Plus: Ashley Greene read a fan letter from a ballsy Miley Cyrus aficionado; Kristen Stewart complimented Conan's beard and threw him into a tizzy; and Jimmy Fallon lost the bet on a game of "Frozen Turkey Shuffle-Bird" against Jay Leno — though there appeared to be an incident of home-court advantage. Watch our compilation to see what you missed.