A friend of mine
Was playing with my dog, who got rather over-excited and decided to stick his nose into my friend's crotch ( Why do some dogs like doing that? ) With that my friend's 5 year old son comes out with "Daddy I think he wants to eat your willy!"
Many years ago my mum was coming home from shopping on a bus. In the seat in front was a woman with her little boy (Spoiled brat!) who thought it would be a good idea to pester his mum for some candy. His mum kept refusing with words to the effect "No you can't have any more sweets, you have had enough already" The brat became even more vocal and whinging as the bus journey progressed but mum his kept refusing. Then the little sod shouted "If you don't let me have a sweet I will tell everyone on this bus that you had a wee in a bucket!" Of course the poor woman blushed scarlet.
Then of course there is this classic from an 8 year old.
www.youtube.com/watch?v=q0vlIA0dcss
(Mackeson_drinker, Fri 24 May 2013, 9:08, 1 reply)

that must have been the same bus my Grandma was one
in 1976 in Liverpool. She heard apparently the same kid say the same thing. It was a story she loved to tell to her dying day. Small world.
(The Heather Mills 1st XI, Wed 29 May 2013, 2:59, closed)