Rap in movie ( man from Delaware ainít got no underwear )


There is a old funny part from a older movie I think maybe rennasaince man , sister act , high school high and the punchline is

Heís a man from Delaware and he ainít got any any wear

Like in a really funny way

Any ideas ?

I did a Google search of those lyrics, and it shows up a song called 'Roof is on Fire' by Rock Master Scott & the Dynamic Three.

It has the lyrics: And if you're not a square from Delaware And you got on clean underwear

I also discovered that the song was sung on one of the episodes of Fresh Prince of Bel Air.
Here's the clip.