flexual Share definition Flag Sexually attracted to two or more "genders." Used instead of bisexual. I walked in on Zack there and he was diddling a guy, two girls, and a trannie. Man, that's one flexual mofo. flexual by Wessexual September 25, 2003 0 0 Get merch Get the flexual mug. Buy Now — $32.95 See more merch