Clock of Death

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Give your victim the choice of being tickled for one hour, but at very short intervals and with plenty of time to rest between, or being tickled straight and nonstop for five minutes. He will always choose the five minute option so as to get it over with quickly. Bring out The Clock of Death where it can be plainly seen and set it for five minutes. Begin vigorous and merciless tickling. At 30 seconds before the five minutes are up, the second hand begins to move backwards. Victim will scream but you can continue tickling for as long as desired.

Guess you need to get the clock for this one. But, I'm sure folks can think of other ways to do this.

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