I think i might be the winner if were talking about how long you can take it without cracking. I have the most UNBELIVABLY ticklish underarms in the world!! And im not exagerating!! Before i knew this, i thought my feet were the most ticklish. How wrong was i!! One night, my then girfriend and i were bored so we decided to tie each other up and tickle to see who could take it. We flipped a coin to see who the lee and ler would be. She got to tickle me first. She started at my feet and at the time i thought that was my most ticklish area, so naturally i was laughing my head off!!! She then started tickling my sides with a feather. This was so bad i thought i die. I seem to be most ticklish with light touches, so as you can imagine a feather is the best thing to use. I was begging her to stop, but she just said 'I havent got to your underarms yet?' She then slowly brought the feather up and along my side and in to the hollow of my left underarm. OH MY GOD!!! I have never shrieked so loud in my life. I never thought that it could tickle that much. She obviously knew she had hit the jackpot and said 'Wow, your very ticklish there arnt you?' Then she put the feather down and started tickling me with her fingernails right in the hollows of my underarms, but because she had tied me in such a way, i could not move an inch. She had tied my left arm to the right side of the bed and my right arm to the left, so my arms were very straight and taught right next to my head. Believe me, i could not move at all and being as ticklish as i was under my arms, this was absolute hell.
She tickled me in the same spot non stop for 20 mins. By the end of it, i was silent laughing and sweat was dripping off me. Good thing that came out of this though was that it was her turn to be tickled next.