Underwear that has been horrifically soiled with menstural blood.
Jesus Ninah, did you put on your blunderwear today?
by Jackso December 7, 2006
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Just buy Grandma the cheapest brand of blunderwear available.
by Kelly Shitrafter March 12, 2009
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Underwear that was sharted in.
Those enchiladas were really spicy. I have use the restroom quick or I'll have to change out of my blunderwear.
by Elephantboy23 October 15, 2022
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