Rap in movie ( man from Delaware ain’t 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

He’s a man from Delaware and he ain’t 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.

It’s been forever since I’ve seen it but wasn’t it also used in the movie House Party?