I ... sort of have it. I have always associated specific colors and genders with numbers and letters. Like, a B is pink, and an O is white, and a T is male, and a D is female. As far as I can tell, it has nothing to do with their typographic characteristics. It's just something that has always been the case for me, and hasn't changed over time.

I'm not certain it's true synesthesia, because gender isn't really a sensory thing in the same way that color and taste are, but I feel at least a kinship with synesthetes.