After going through a McDonald's drive through, you roll forward 3 feet, stop the car, and check to make sure the order is correct. Can also be applied to any fast food venue.
Luckily before I pulled away, I did some McChecken and realized that they forgot my McDouble.
A sweet condiment locally sauced from the back of every McDonald's, harvested from the Male Employees semen with a splash of mayo to create the sweat addicting sauce.
McDonalds employee: Sorry we're out of McChicken sauce, we only have girls on tonight!
McDonalds eater: Its just Mayo, how do you run out of Mayo?
McDonalds employee: Chefs secret!