Haha...I can think of a few off the top of my head:

--Shy Love claiming she skipped a grade in high school, graduated undergrad and got 2 masters degrees in finance before going to work at 1800PetMeds.

--Veronica Rayne claiming she went to law school, then worked in her mother's business for ten years or something like that, then got into porn. Doing the math backwards means she would have started high school when she was like eight years old. Then Luke fields a couple of legal questions from the peanut gallery, and she gets caught plagiarising the answers off the net.

--Someone once wrote on ADT that Roxy Jezel had a degree in philosophy, then someone caught her mixing up Plato and Aristotle.

--Keri Sable was quitting porn to use her hard-earned money for college. Hell, people were debating if she was Ivy material (no, she wasn't). She never made it to college, and I bet she's hard at work on the overnight shift at McDonald's right now.

--Asia Carrera claims she is a member of Mensa. She also used to claim on her website that she was some investment guru and was familiar with Warren Buffett.

--There's a whole thread here called "Is Sasha Grey Stupid?"