Show Rundown: May 13, 2010

Iron Man calls in, plus Ralph and Robin get into a spat over Twitter

Photo: The Howard Stern Show

Today on the Stern Show: Ralph criticizes Robin for her incessant Tweeting; Richard & Sal continue crossing streams; Baba Booey eats a blue cupcake and its hilarious; plus Robert Downey Jr. calls in to talk about "Saturday Night Live," "Iron Man 2," and his sex life