First Look: Britney Spears' 'Glee' episode
Actor John Stamos also guest stars TuesdayJohn Stamos makes his "Glee" debut in Tuesday's special Britney Spears episode, and things aren't looking very good for Will-Emma fans.
In the clip below, Cheerios members Brittany (Heather Morris) and Santana (Naya Rivera) find themselves dancing and singing to Spears' "Me Against the Music."
Morris even finds herself in full-on Spears garb a la the song's music video.
Stamos, who plays dentist Dr. Carl, visits Emma (Jayma Mays) at the high school while she's in the middle of a conversation with glee club coach Will (Matthew Morrison) and plants a kiss on her mouth. Check out the scene that Zap2it first posted.
According to Yahoo TV, the "Glee" cast also performs "Stronger," "Toxic," "I'm a Slave 4 U," "Oops ... I Did It Again" and "Baby One More Time."