So tell me that your son doesn't know any cuss words
When his bus driver's screaming at him, fucking him up worse

from Eminem – Who Knew Lyrics on Rap Genius

Meaning

Parents blame Eminem for the curse words their children pick up. They don’t realize, however, that Eminem is not the only one teaching them to swear. The bus is the place all the young kids are taught to swear. The bus driver doesn’t give a fuck, and no parents have a clue.

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