suck at school. Any ideas how I can explain it to him? A lot of the kids were saying a joke "say cuss backwards". The teacher heard my son say it and he got in trouble. She called my wife and my wife wants me to explain to him. We don't use that word at home and I'm really struggling how to explain it to him. My son is very intelligent and "because I said so " really doesn't work. He wants to know why. Any ideas?