I didnt hear that shit! Have you got a link to download it or the lyrics to it? I got the lyrics to nearly all em's shit...

Totally agree with ballisik though, cannabis is known to "freestyle" pre-writtens and Eminem recycles a lot of his freestyles, his main ones are...

Greg with the wooden leg
Chauvanist pig droven this Big Lincoln
Diss to cage/Hand me and eigth/ape
Weed lacer, 97 burgundy blazer...
I might as well erase my face with white-out
And some that are just verses from his songs...