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1.
A Freudian camisole is a variation on the common phrase "Freudian slip." A Freudian slip is when you accidentally say something that reveals something about your subconscious mind. In contrast, a Freudian camisole is when you accidentally hear something wrong. This may or may not reveal something about your subconscious.

(A camisole is a type of undergarment, like a slip. This is a pun.)
Girl: And that's where the road intersects-

Boy: *not paying attention* Wait did you say sex?

Girl: What? No. You heard me wrong. Must have been a Freudian camisole...
by Eden O. September 02, 2010