(Dehd Seh-see) A term used to denote a high level of physical beauty. Beauty that could potentially lead unwary parties into deadly situations.
***Note: When used by a man in reference to himself may also denote a high level of interest in men.
Man: That chick is dead sexy. (That lady over there is highly attractive in my opinion.)
Man: I'm the definition of dead sexy. (I may be interested in other men.)