Eminem's Music To Be Murdered By track "Godzilla" is notable for having the late Juice Wrld on the hook.

It's also notable for the speed in which Shady raps. How fast?

Em gets off 228 words in 30 seconds, or 7.6 words a second.

Eminem's 2013 track" Rap God" is the fastest rap song of all time, according to Guinness.

In "Rap God", Em averages 4.28 words a second and hits a top speed 6.46 words a second in one 15 second segment. 

It's unclear of Guinness will recognize "Godzilla", and there are probably some rap tracks out there that are faster, but just aren't famous enough to be considered.

Still, Eminem can rap really, really fast.