I'm not a pizza delivery driver. Though, a friend of mind had driven for different places over the years. I went with him a few times on some runs and waited in the car. Some of the people didn't even give him any tip at all after making the delivery. I just thought that's pretty ignorant when he's using his gas and time to drive out to your place, cause you're too lazy to pick it up yourself, and you can't even give a little tip? I could tell when people wouldn't tip him, cause he would throw stuff around their yard in anger on the way back to the car.