I'm starting to think that self deprecating jokes may get you some laughs, but basically you are just giving her permission to laugh at you (not with) and while she may become friendly with you, these jokes don't actually build attraction (at least for me). My thought process was that by self deprecating you are showing confidence, but actually you are just giving her more reasons not to go home with you. In addition I have found joking about your own sexuality to be confusing for girls, and doesn't build attraction either. Thoughts?