I know this is a crazy dare, but it's for $100 and then some! Should I do it?

Okay, here's the deal. My best friend and I kinda have a rep for taking on all sorts of creative dares from friends. It used to be just for fun, and still is for the most part, but for this one there'll be actual money on the line. So here's how it'll go: a mutual friend of mine will handcuff the two of us together, probably my right hand to her left since I'm a leftie and she isn't. The cuffs will be double-locked to guard against accidental tightening. Both our friend and the two of us will hold onto a key. If we can last a week stuck together, we'll each win $100 and she'll have to be our slave for a week! :) If we fail, we'll have to be her slaves for a week, plus spend an extra day in the cuffs before actually being released. So really we only have to worry about getting to day 6 since we'll be past the point of no return by then anyway. But until the week is over, the cuffs cannot come off for any reason or we lose. That means we'll be doing everything together: eating, sleeping, you name it. So should we do it? Is it worth it? Our friend is being kinda smug about our chances, so it would be nice to do it just to prove her wrong!