"That's none of your bees wax!"
I remember kids saying that when I was younger. Why did they feel the need for a euphamism for the word 'business?' That's not a bad word.
I guess they just didn't want to sound so stern.
Today, most kids are not that shy. They'll say, "That's none of your business!
" Some would add a word between 'your' and 'business.'