I don't know if this qualifies but it's a funny (and true) story. Years ago I was dating this girl who had the most UN-ticklish feet you could imagine. They were soft and beautiful and she loved having them rubbed and scratched but nothing tickled her at all. In fact tickling her feet would put her to sleep. Well one night we went out to a club to see an R rated hypnotist. He pulled her up on stage with a group of other people. He got her in some sort of trance and was holding a raggety Ann doll. He told her that the doll was her and everything he did to the doll she would feel. He said I'm going to tickle your feet and you've got really, really ticklish feet !! I said to mtself this isn't going to work and he's going to make a fool of himself.. Well he started tickling the dolls feet and my girlfriend fell off the chair laughing, rolling around hysterical !! I had NEVER heard her laugh like that ! When we got home she said she remembered everything, was fully aware of what was going on and knew she wasn't ticklish but she said she actually felt it tickling and couldn't stop laughing. So I thckled her feet myself.....Nothing.