I know you'd like to thank your shit don't stank
But lean a little bit closer
See that roses really smell like ooo-ooo-oooo
Yeah, roses really smell like ooo-ooo-oooo

from Outkast – Roses Lyrics on Rap Genius

When someone thinks “their shit don’t stink” it means that they feel they are better than everyone. ie. everyone else’s shits stink but not theirs. So 3-stacks is telling Caroline that shes not better than everyone just because shes sexy as hell, and that infact her shit smells…well like shit

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