Here's an interesting combination of game theory and gluttony.
I like cherries, summer means fruit and one of the best is the cherry. One out of every 15-20 cherries is bad and I wish I had not eaten it. So here's the problem: there are 2 cherries left and you eat the next to the last one. If it's excellent then do you eat the final cherry and risk a bad taste, or throw away a precious cherry so the last taste in your mouth is from a great cherry?
There's a mathematical equation for the probability that the final cherry is good, but that doesn't include the emotional desire to finish off the cherries on a good note.
Maybe the Freakanomics team can figure out this one.