Don't you hate it when that happens? They do something a little naughty or somewhat undesirable and you're trying not to laugh cuz you just know its going to encourage them!

DD said the other day "Mummy I got poo on my finger and put it in my mouth!" and after I made sure I heard her correctly I had to try and tell her why we don't put poo in our mouths, while trying to maintain a straight face...