The Fat Blue Line/Gags

Couch gag
The Simpson family arrives on stage on a recreation of the 1985 Queen concert, Homer is Freddie Mercury, Lisa is, Marge is Brian May, Bart is  and Maggie is the camera woman. Homer shouts "Day-oh!", the public shouts back, and then does a split and his pants rips apart, to which he D'ohes, and the public D'ohes back.