This is not a story of personal experience, but rather, is another's experience explained to me by father.

He told me a story of a guy simpling peeing at the urinal.  This man, unfortunately, dropped a quarter into the urinal.  However, given the small value of a quarter, he simply could not justify putting his hand into the urinal to retreive his quarter.

What this potentially insane, and perhaps genius/perhaps not, decided to do was set up a condition that he could justify putting his hand into the urinal to retreive his quarter.  This condition was that he would drop $5 dollars in change into the urinal--this would be a sufficient condition in order to retreive his lost quarter.  So, in fact, that is exactly what this gentleman did--he dropped in five dollars in change and retrieved his quarter.

Personally, I could not do this unless it was for more money than $5 dollars.  I might do it for like $100 bucks.  Why just a $100??  I would imagine that a urinal would be overflowing at this point--it is quite possible that I would never have to touch the urinal water.  Once I would have to--bets off.