I was at a game Wednesday (not my son's) standing among several dad/friends in a backstop viewing area several yards away from the field. One has a son that is the runner on second. Pick move to second. I hear "baaaaack" louder than I've ever heard a human voice yell coming from the dad. This came mid-sentence for him... totally drowned out bench yell. I almost dropped my drink. Not another loud sound from him the rest of the game.
A mom from the past - every time son was at bat and made any contact, she would throw out a high pitch euphoric scream of excitement that I've only heard in, well, never mind. Everyone on the block would hear. Never any other cheering (or screams) for anyone else.
"Household Homers"