Derogative term. Acronym standing for 'not all tampons accounted for'.

Used to describe a person that is in an unusually bad mood or is being rude. Derived from the scenario when a tampon has not been properly removed from the body and implying that its unwanted presence makes the host irritated.

Similar to "having something up one's ass" or "sand in one's vagina".
- She's been acting nataf all week.
by Danial Namousi June 7, 2011
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