Which song starts playing after a black man dives into the pool? Another one bites the dust.
Do you think it's right to imply that black people are poor swimmers?
Well it's just a joke, what do you expect me to say here?
The idea that black people aren't very good swimmers is a stereotype and is completely untrue. When these kinds of jokes get repeated it reinforces the stereotypes, which can lead to negative outcomes for black people.