"Laryngitis" is the eighteenth episode of the American television series Glee. The episode premiered on the Fox network on May 11, 2010. It was directed by Alfonso Gomez-Rejon and written by series creator Ryan Murphy. In "Laryngitis", glee club member Puck (Mark Salling) dates Mercedes (Amber Riley) in an attempt to raise his social status. Kurt (Chris Colfer) is jealous of the time his father is spending with Finn (Cory Monteith), and Rachel (Lea Michele) worries about her future when she is diagnosed with tonsillitis. Mike O'Malley guest-stars as Kurt's father Burt, and Zack Weinstein appears as disabled former football player Sean Fretthold.