The Who's bass player John Entwistle wrote this at Pete Townshend's request, as part of The Who's rock opera Tommy
, where the titular character experiences bullying. Entwistle based the melody around the piano song "Chopsticks," and based "Cousin Kevin" on an actual neighborhood bully he met as a child.
Both this song and "Fiddle About" dealt with the most traumatic experiences that Tommy would face in his quest for spiritual enlightenment: bullying and molestation at the hands of family, respectively. Townshend had suffered both as a child, and it would be too difficult for him to write on either subject. Entwistle rose to the task.
Eli - Melrose Park, PA