i guess to finally answer the question here goes: one adopts a ticklish nature upon conception. the level of ticklishness attained is up to the individual, in terms of how much it is exploited up until now. some people lose it say, on their soles from maybe too much barefoot walking, too long a time period being tickled, so it loses sensitvity, takes your pick. and probabaly you can throw them all out. what also could be the case, depending on the tickler, that the lee' was probably tickled too long and lost it. so, if you judge ticklishness on just seeing people laugh and nothing else, then you are setting yourself for a false sense of security based on that one variable. i guess the best(and most simple way) to find out is to just ask, and if the answer is no, simply do a little poke now and then just to make sure. (to avoid getting the hell beat out ya, make sure the person is comfortable with ya first) so basically ticklers, try to use proper time limits to ensure maximim ticklishness in your subjects. thank you. class dismissed