I haven't from tickling alone but I see in this thread a lot of people have mentioned their feet being tickled causes them to cum, or at least get really turned on. Me too
. My feet aren't as badly ticklish as elsewhere, but holy sh** being tickled on my feet the sensation seems to go straight to my clit, especially my toes. The times I had a ler who focused on my toes for a little bit, it made me feel so turned on, that I felt like if it went on much longer I might, just from that, but never had it pushed far enough yet.