Lady Riff is an instrumental song made up on the guitar by Ricky Gervais based on the chords of the song Lady that is heard over the end credits of the episode Homer Simpson, This Is Your Wife. It is the thirty-fifth track of the album The Simpsons: Testify.


Ricky Gervais:
(while playing the guitar) Oh, yeah, can you feel it? Just over the credits, just riffing now. Words. And chords. Not the poetry in the...real thing, but not bad for an ad lib. Not good, but— (stops playing but the credits are still rolling) And it's not long enough, so I'll just do a little bit more (plays a little) of this, nearly done—(strums) That's the final credit, yeah, that's the end. (clears throat)