It's not okay to take something that isn't yours.
When Frank arrives to collect his take-out order from a restaurant, he spots several bags of food sitting out for pick-up but is told that the cooks forgot his order.
Frank wants to get home as quickly as possible.
Frank cancels his order and buys a to-go meal at a gas station on the way home.
Frank grabs the bag for another person's order and leaves the restaurant without saying a word to any of the workers.
Frank gets home quickly, but he doesn't have a very enjoyable meal.
Someone else's order is messed up, but Frank gets home quickly and has food to eat.