1 definition by billiestamps

Top Definition
1. Period underwear: underwear that is old, stretched out, has shot elastic and is stained from previous periods so you save it to wear during future periods thereby not ruining the current good stuff.
Jane: Geez, I have a headache and am feeling so bloated today. I must be gonna start soon.
Jane's friend: Hope you have your pundies on.
by billiestamps April 10, 2009
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