I cannot believe that someone actually asked this. No offence Tummy. But why would anyone answer anything besides all night. Oh well, somethings we'll never know.
I did (along with a few other people). My ideal scenario is that I tickle Heidi Klum for two hours, long enough to enjoy myself thoroughly and get her quite peeved at me. Then she has an entire week to take revenge.
Five minutes, five years, whatever. But it's not about torture for me, it's about mutual enjoyment. No fun for me if they don't love it, too. (well, maybe a lil' bit, but shhhh, don't tell. not nearly as much, though!)