You Might Be an Economist if...

You think a game is an analytical tool popularised by John Nash.
You see finding a job as just another matchmaking exercise.

Your grocery list is seasonally adjusted for relative prices.

You try to calculate your kid's discount factor by promising different amounts of candy after dinner to see how much of it is worth one chocolate bar before dinner.

You carpool, but not because of environmental concerns. There are economies of scale involved.

These and other economist jokes at Elliephant, hat tip Newmark.