Crocodilehunter - LOVED your post!! Why did I never think of that.
I recently took to threatening my oldest with a head dunk in the muddy ditch at the end of the garden when he kept throwing hissy fits...he's almost 8 and was acting like a 2yr old IMO.
He didn't think I was serious.....HAHA!
Ended up with my middle two pretending to be grumpy so I'd chase them and pretend to dunk them too. Despite his muddy hair it ment the eldest couldn't possibly stay grumpy when the rest of us were having so much fun