A Simple Analogy

You're going out for dinner with some friends. You vote to let the driver choose the restaurant.

He chooses the most expensive restaurant in town, and when you get there, he trashes the place. You complain, and he says, "Hey, you voted to let me do this." People believe him.

When it comes time to settle the tab, you all vote to pitch in and pay your share. But the driver says, "I'm not going to drive you home unless you put this on your kids' credit card, and unless you agree to give a 30% tip to my sister-in-law." You decide to vote against doing that. He says "You're a flip-flopper. You voted to pay for dinner before you voted against paying for dinner." People believe him.