In my experience, MMF true bisexual porn is a hell of a lot harder to come by than most people would think, and though I've seen several, NONE of them were exciting or any good. Even in cases where the guys were exciting and good looking, the girl was always a weak-ass performer who was average-looking at best facewise and, in every single case, had a body that was completely flat on all sides. I've learned to just not seek out bi porn, because I'd rather see none at all than some halfassed product.