Q
My friend washes her six-year-old son's mouth out with soap when he curses. Sometimes she makes him swallow a teaspoon of Tabasco sauce. He seems unfazed and doesn't change his behavior. Shouldn't this kind of discipline be left in the Stone Age?
A
Your friend's response to her son's behavior isn't discipline; it's cruelty. Her son is learning to be a stoic by taking his mom's abusive response to his misbehavior without showing any weakness. Of course, the Tabasco sauce burns his mouth and esophagus; it's a dangerous practice and any doctor would agree that it's physically harmful to do this to a child.
Your friend is humiliating her son and in so doing she is breeding anger, resentment, and revenge in him. He's made up his mind that she will not "break" him with these punishments and she may in fact be fueling more of his bad behavior, as this becomes his way of getting back at her. Unless she tries to substitute building a relationship with her son, this power struggle will continue and become worse. If there were any way that you or another adult could help her to attend some parenting courses, you would be doing a great service for their relationship and his well-being.