Yuh punanny hole nuh bigger than a basin keg…
Tell dem mi seh Nuttin no go so

from Notch – Nuttin No Go So on Rap Genius

Meaning the girl isn’t promiscuous or is a virgin.

Basin is a brewery.

The hole of a beer keg is small so it’s implied that she hasn’t had much activity down there. But again, nothing no go so. It doesn’t always happen that way.

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