Look man, the crowd full of pretty young dames
If you gonna do dirt, then you can't leave a stain, man!

from J. Cole – Knock On Wood Lyrics on Rap Genius

Meaning

At Cole’s performances, he often encounters tempting girls at the shows, and he knows that he has to be smart about how he goes about his ‘business’, so as not to leave a trace that could dent his reputation

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