Hipster Bisexual
Person who elevates minor same-sex dalliances in an attempt to seem more relevant and cool than they actually are, despite never having dated or slept with another same-sex partner again. Announce their bisexuality loudly and more proudly than other LGBT-oriented people and will regale you again and again with stories of their lone same-sex encounter.
Dumb hipster bisexual fool is telling us about her high school girlfriend of 2 weeks. Again.