beauty killer
adj.; Someone who, no matter how fabulous you look, disregards your beauty and treats you like they would any other person. Your beauty is neutralized in the eyes of a beauty killer.
"I bet that smoking hot blonde will persuade him to buy her a drink. I mean, I would."
"Not with him, bro! That guy's a beauty killer. I bet he'll talk her into buying the first round, then he'll buy the second."
"Not with him, bro! That guy's a beauty killer. I bet he'll talk her into buying the first round, then he'll buy the second."