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1.
Clothing that is offensive or outlandish.
Dude, all you ever wear is blunderwear
by Angelus Animi October 19, 2007
 
2.
Underwear that has been horrifically soiled with menstural blood.
Jesus Ninah, did you put on your blunderwear today?
by Jackso December 06, 2006
 
3.
Adult diapers such as DEPENDS.
Just buy Grandma the cheapest brand of blunderwear available.
by Kelly Shitrafter March 12, 2009