On departure day, it was my job to pay for the taxi to the airport. The driver didn't speak much English. When we arrived at JFK, the meter said the price of the ride was just under $25 dollars. I got out my wallet, and the driver got out of the car, held out his hand, and said, "Theerty dollar." I had obviously seen the real price, but it totally didn't even cross my mind that the cabbie was lying. I just figured there was some other tax I was unaware of. I had never paid for a cab before. I gave him the $30, and then, knowing you're supposed to tip driver, another eight dollars. He looked confused, and I said, "For tip." He suddenly looked extremely ashamed and gave me back the ten. "No..." he said, looking at the ground.
Oh. And then I got it. He saw two young girls and worried he wasn't going to get a tip, so he lied. When, actually, we had no intention of stiffing him. I was even going to give him a bigger tip than the one he fabricated. And then we took our suitcases and went home.
Fact: It's better to get things the right way.