Now, seriously. Yes a guy would say that if he likes the girl. He probably is just testing to see if you have a sense of humor and can laugh at yourself. I test girls this way myself. Think about it, being together whit someone who takes herself too seriously, and has no sense of humor can be such a pain.
Holy sh*t, you must be a freak, and he is in love you but you are so crazy he can't be with you! lolz. If he is flirting with you it is obv working because you are in such a tizz over a benign comment. You are probably a little quirky and that is all, if you were too weird, he probably would be running for the hills.