The combination of Asexual and Bisexual, most commonly referring too Asexual people who have relationships with both men and women.
James "Hey Katie do you want to go on a date with me?"
Katie "Im Baysexual, so I don't get intimate with people but sure."
James "I'm fine with that, see you around 7."
Someone who openly and vigorously defends the films of Michael Bay. Claiming them to be grand feats of cinema when actually they are just hot chicks and explosions.
Tristan claims Transformers 2: Rise of the Fallen is as great a film as Citizen Kane, what a baysexual douche.