Last night on Late Night, Heidi Klum shed her runway graces to try to enact “sharpening a pencil†in a round of hip-hop dance charades. Plus: David Letterman mock-threatened Aubrey Plaza that he wouldn’t show a clip of Safety Not Guaranteed, a film based on Jay Leno’s “Headlines†segment; Elijah Wood taught us, step by step, how to make a bong out of a Gatorade bottle; and Lionel Richie crooned “Easy†off of his latest Tuskegee album with Joel and Benji Madden of Good Charlotte. Watch our compilation to see what you missed.