Love the bisexual CORBIN FISHER stuff. Used to be able to find it on Pornhub... can't anymore... can anyone help?

Try xhamster.com I think I've see some of it there. They also have a bisexual tab. Also, check out the 'playlists'. Quite a few CF videos there but not certain if they're the ones you're looking for. Not sure why, but even if they've been removed from the regular portion of the site they can still be viewed in the playlists. hope this is helpful.

This one is not really bisexual, but is a woman and a shemale. Also, it is animation, so what a dick! Enjoy.
http://213.174.149.129/key=cjwrNEUP6JI,end=1379840071/data=S4k5,D885E415/reftag=5412162/2/21/0/9848644/2234967.mp4

How about Bi now gay later, lovely shots of one guy alternating between pussy and arse.

This video's very hot too http://www.youporn.com/watch/430314/all-bi-ourselves/

Pretty good, but the woman could use some instruction/training on how to suck a dick.

hot video, will have to watch it again tonight