You can believe what you want, but I reckon it is impossible to convincingly fake being ticklish for any more than a few seconds. People are ticklish in different ways and I think some people confuse genuinely ticklish models who simply don't find being tickled all that unpleasant with "fakes". I've known some people who are ridiculously ticklish, but can tolerate the sensation quite easily without jerking or stuggling. I also know someone who detests it so much, that she'll completely reject the sensation, and never laugh. We were having a rumble once, and her friend and I held her down and I tickled her foot - People are usually more prone to being tickled if the situation is light-hearted and it takes them by surprise etc. Well this was about as light-hearted as you could get - she was already in hysterics but the second I tickled her she stopped laughing completely and just got angry. I know for a fact that she is really very sensitive, but she'd make a terrible model - she'd just sit and complain for 5 minutes and you'd probably say she was the worst faker ever.