It's bad to grab someone's head.
Sam's coworker is being disruptive during a work meeting.
Sam wants his coworker to quiet down and be respectful during the meeting.
Sam asks his coworker to be quiet and pay attention.
Sam grabs his coworker's head and tells him to shut up and be quiet.
Sam is able to focus and productively listen to the rest of the work meeting.
Sam is punished by his boss for inappropriate workplace behavior.