A family is staying with us and I see the father grab and pull the boy's (10 -12 y/o) hair and then the boy grabs the baby's (1 y/o) hair and I say sternly to both of them, "let go!" They do. I tell them that this is unacceptable behavior. I ground one of them and I forget what I do to the other and then I tell them we have to get family counseling for them.