Top Definition
Natural Asses Been Tapped.

an acronym typically used amongst peer groups to signify the awesome nature of the naturally occurring big booty....being tapped. Usually said the morning after a hook-up.
Person A walks into the room

Person B: "Well?"

Person A raising his fist to 'pound' his friend: "NABT Baby!"
by drocadile December 08, 2010

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