Only being attracted to anyone who looks like David Bowie, especially if this person loves David Bowie, dresses like David Bowie, or both. Women, gay men, and heterosexual men can all identify themselves as bowiesexual.
Girl: I love your platform shoes! I am bowiesexual, and you are totally hot.
Guy: I am too! You can't deny David Bowie's sexual allure. Wanna make out?
Girl: YES! Can I call you David?
"Do you think that 21 year old super model is actually attracted to that super wealthy 90 year old man that she's married to?"
"Of course! She's blingsexual!"