Discover Your Kind Of Sexy. Here at CheapUndies, every day is Halloween; another opportunity to explore one's latently sinister-sexy sensuality. Created by up-and-coming lingerie designers Behind Closed Doors, these coquettish costumes will raise numerous eyebrows and turn every move into a bawdy burlesque. So… who do you want to be tonight? The flight attendant who wants to make every passenger a member of her Mile-High Club? A flirty-AF French maid? A sultry schoolgirl who’s hot for teacher (and the feeling is mutual)? There's even a Sexy Dog Walker costume in here -- and that's a first for us, anyway. There are no losers in this brash game of Dress Up…