Yeah, after losing peanut butter as their claim to fame, they'll have to fall back on the Super Soaker.
This sounds a bit offensive to me.
What can I say, this is my opinion. I'm not being offensive on purpose.
I'm sure black people have invented plenty of things, we just don't know and appreciate it as a society. Spreading the rumor that black people don't invent things of use makes them seem less than human and could cause racial tension.