My son Ray was about four and he had been around his uncles listening to some strong swear words. So he began to pick up on them. My mom told him "Ray, I don't want you to say 'dammit' again, do you understand me?" "Yes ma'am." he said. "If you do", she told him "I am going to wash your mouth out with soap". The next day he came back and took out of his pocket a small bar of soap he had snuck out of our bathroom. She asked him, "What's that for?" He looked her straight in the eye and said, "In case I say 'dammit' again".