It's rude to give your child the silent treatment.
Peter has just found out that his son Henry has gotten terrible grades at school.
Peter wants to show Henry that he's displeased.
Peter tells Henry that it's not good enough to get grades like that and begins to fake cry about it.
Peter stops talking to Henry and purposefully ignores him the rest of the day.
Henry is shocked that he made his father cry because of his grades and promises profusely that he'll improve them.
Henry is confused as he doesn't understand what's happening since Peter never verbalized anything.