A frequent poster on an online jihadist forum has called on American Muslims to cut off David Letterman’s tongue. The late night television host earned the extremists’ ire by telling jokes about Osama bin Laden’s replacement during his monologue on June 8. “To the righteous Muslims in America: Isn’t there a man among you … who can cut off the tongue of this lousy Jew and silence him forever?” wrote the poster, identified as Umar al Basrawi in an article by the New York Post. Letterman is not Jewish. The threat was first identified by the Middle East Media Research Institute, an organization that monitors jihadis online.