Blindly Selected Characters/Mom Was Right (from The Simpsons)

Cast

 * Telly Monster (from Sesame Street) as Bart Simpson
 * Emmy (from Dragon Tales) as Marge Simpson

Lyrics
Telly Monster: Mom was right, your singing's a sin. You're as Les misérable as Lee Marvin.

Emmy: Sure your dad's singing could make your hair curl, But you, too, Telly, have sung and danced like a girl.

Telly Monster: Eep!