Tell 'em shit's about to get extra messy, especially when I flex again
When Eminem is flexing (showing off) his lyrical skills, things get messy. This can mean two things:
Things get out of control, because people can’t handle how good he is.
Eminem often paints qrotesque and messy pictures when he is just rhyming and playing with words. We have many examples of this, especially on Relapse and The Slim Shady LP. You can even see many examples of this on it track as well, like here
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