Just when you thought she couldn't get any hotter, Megan Fox done went and talked about her rabid sexual appetite for other chicks.

Megan just told Esquire magazine, "I have no question in my mind about being bisexual ... I mean, I could see myself in a relationship with a girl -- Olivia Wilde is so sexy she makes me want to strangle a mountain ox with my bare hands."

Just a guess -- but even PETA would have to look the other way on that one...