And if you hear a man that sounds like me smack him
Then ask him where the fuck did he get his damn raps from

from Redman – Rated R Lyrics on Rap Genius

Later used in Eminem’s Low Down, Dirty

And if you hear a man that sounds like me smack him
And ask him where the fuck did he get his damn raps from

He even starts the song with:

Warning, this shit’s gon be rated R, restricted

Which is probably another reference to this song.

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