Heteroflexible ... this was the 1st place that I saw that term and I looked it up ... some interesting definitions:
1/ A person who identifies as a heterosexual, but is not afraid to explore curiosity towards the same sex.
2/ A person who enjoys sex with both male & females but considers themself heterosexual in the sense that they do not relate with the same sex for an emotional relationship like a bi-sexual could. Heteroflexible is a heterosexual person that is beyond the bi-curious stage but would never engage in an emotional relationship with the same sex.
3/ Not gay, but not closed to any options. "I'll be honest, after the fourth margarita, I usually get a bit heteroflexible. And I just finished my fourth margarita, know what I'm saying?."(heard on NPR)
4/ Not gay or bisexual, but in between bi and straight. Like, being straight, but you would consider doing something with a member of the same gender should the situation arise. Mainly for pleasure and adventurous reasons, you probably wouldn't date them. Also can be called bent.
It DOESNT mean gay as some people would say it does.
They all say the same thing ... never a boring weekend and it keeps your date book full if you want.
oh .. Kinky ... that only applies to the first time you do it!