I remember when I was about 9 year old, me and my brother used to play our Sex Pistol records on my dads hifi. One day my mum took the time to listen to the lyrics... (it was "Belsen was a Gas") and she went ballistic! Made us scratch all of the records so they were unplayable. Trouble is, we still played them when she was out.. scratches n all. Really damaged my Dads expensive needle!
Moral of the story is. Don't have kids if you want to keep your hifi in tip top condition. I'm finding this out now... 