The son was really harsh, but he was not heartless. He was hurting and could not show his love properly, especially with someone watching him. So his words came out wrong.
If I were the mother, I would feel hurt at first. But after seeing what was inside the sack, I would understand that my son still loves me.
This story teaches us that mothers understand our feelings even when we don’t express them well. But it also reminds us to be kind, because love should be shown gently too.