So you might want to go back to the lab tonight and um
Scribble out them rhymes you were going to spit
And start over from scratch and write new ones
But I'm afraid that it ain't gonna make no difference

from Eminem (Ft. Lil Wayne) – No Love Lyrics on Rap Genius

Meaning

Could just be a general jab at rappers who are intimidated by Eminem, try to copy his style and fail, but the conspiracy theorists who think that Eminem is dissing Lil Wayne while collaboing with him think this is actually a jab at Lil Wayne for rewriting his verse on “Forever” after hearing Eminem’s verse. (Interestingly enough, Kanye claims he rewrote his “Forever” verse after hearing Em’s as well.)

If this is true, then: That’s low!, Em! (L.L. Cool J’s beef with Canibus started after L.L. dissed Canibus on a song where they collaborated)

Fortunately for us fans, Em and Weezy most likely have a working relationship where they’re okay with dissing each other because they still collaborate hella often, and it’s almost a running joke as Em rebukes his past thoughts of dissing Wayne.

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