Robert Downey Jr. had a hilarious interview on Howard Stern today in which he answered questions about everything under the sun, including: his sex life with Susan Downey; his take on Don Cheadle replacing Terrance Howard in the ‘Iron Man’ sequel, his therapy sessions, and whether he is currently sane. Downey did not disappoint. He was a great sport, and my favorite part was when Stern told him that he heard about his gigantic penis, and Downey humbly deemed himself “average.” I think he was just trying to make Stern feel better about Stern’s tiny penis. So sweet of him.