I'm trying to put an age on when I learnt this song ( or a varient) through oral tradition on the playground. I'm pretty sure it was 9 or 10. I remember being facinated with the word play... you didn't actually say those forbidden words and that was all the fun.

My kids all learnt it traditionally ( on the playground) but out grew it before the lewd meaning had any context.

I would take the explanatory note out of the kid site... definately more information than needed. I can't imagine many parents want to answer the question what's a gang bang when asked by a 9 year old...

I'm just rambling out... I've got to think on this a little more.

Tinker