My children, let me show you them

The children are cleaning up from their tea-party-cum-fantasy-adventure-fighting-game when they spontaneously break out with:

"WASHdishes! Do-do-dee-do-do!"

"WashDISHES! Do-do-do-do!"

This goes on for a bit. After I stop laughing I say "You know, you are strange and wonderful creatures."
To which they respond...

"THANKyou! Do-do-dee-do-do!"
"ThankYOU! Do-do-do-do!"

It makes up for a great deal, I must say.