You should share with your friends.
Harry was at the bar with his friends when he realized he was hungry and decided to order a large appetizer.
Harry wants to eat.
When the waiter delivers the appetizer, Harry leaves it in the center of the table and encourages his friends to have some.
When the waiter delivers the appetizer, Harry pulls it toward himself and eats it all without offering his friends any.
Harry's friends are appreciative of his generosity and enjoy the food.
Harry's friends feel annoyed and have to order their own food.