1 definition by heeeellyeah.

that special day of the year when girls (or usually just one girl and her friend) as an inside joke, dress as slutty as possible to make fun of all of those other bitches who do it daily, thinking they look so hot. *also to see how many guys get "excited" if you know what i mean ;*
I'm wearing my mini skirt and thong on National Dress Like a Slut Day.
by heeeellyeah. December 14, 2009
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