It's expected that you are respectful to your in-laws
David and his wife were visiting his wife's parents home for dinner.
David wants to let his mother in law what he thought about the food.
David tells his mother-in-law that the food that she prepared was delicious.
David tells his mother-in-law that the food tasted like garbage, and he couldn't stand it.
David's mother in law thanked him for the compliment and gave him the recipe.
David's in-laws were appalled and told David he needed to leave the house immediately.