What an interesting experience... I must say I have an unusual reaction to going to the dentist as well, although in a different way. I wouldn't really describe myself as a masochist, but I absolutely refuse nitro when having work done. Not only that, but my last two fillings I requested to have done without novacaine. Weird, huh? And I actually enjoy the feeling of the suction tube when it catches a bit of the inside of my mouth and pinches it. Perhaps I'm pain slut after all.