You shouldn't eat someone's leftovers without permission.
Connor is on his lunch break and notices some appetizing leftovers inside the office fridge that are clearly marked as belonging to Connor’s coworker.
Connor wants to eat something good for lunch.
Connor decides to leave his coworker's leftovers alone and orders in some food instead.
Connor eats his coworker's leftovers without asking first.
Connor's coworker savors his leftovers at lunch.
Connor's coworker finds out his leftovers are gone and has to go to the cafeteria to get something to eat.