People don't realize that the store and people you order from remember when you tip them. If a guy has 3 orders going out that are going to take 30 minutes he might put yours on the bottom because he or a fellow driver knows you are a stiffer. I've seen it happen folks.

Pizza delivery is a thankless job where drivers have to cover their own gas, mileage, and car maintenance. While it isn't necessarily a hard job, it is very fast paced. When that guy arrives at your door he either has other pizzas in the car or has to head back to the store for another order. There are no breaks or lunch hours. It is nothing but back and forth. That's a lot of running around to be stiffed by some 11 year old kid saving money to buy schwagg.

Most delivery guys would be happy with $1. Don't be a douchebag.