Come, come, make fun of me, Britney

The story:

I know this song from the soundtrack for the first Pokémon movie, so I was 9 years old when I first heard it. The male rap at the beginning is sung very fast, and the man has some kind of accent or something, making the lyrics very hard to understand. I think I realized what the lyrics actually were a couple of years later when it occurred to me that it made no sense for the guy to ask Britney to make fun of him.