I don't listen to much rap, so I wouldn't know, but find me a person that raps to music faster than this dude. (uber-fast starts around 1:49)
Also, this is NOT a challenge. I'm simply interested in finding a faster rapper. Any language works.
Here he is doing it live:
Spoiler:
Here is a commercial that aired in Korea starring him.
Faster than this dude? It's pretty language related, really. I don't think the general germanic way of pronunciation allows us to go faster than that. At least, if it is to be clearly understandable, unlike that dude in edibleghost's video.