"Mummy"
"Yes darling"
"Mummy, are you doing a wee or a poo?"
"A poo, precious"
"Poos come out of your bottom"
"Yes. Yes they do"
"And wees come out of willies"
"Well, some do. But mine doesn't because I am a girl and girls don't have willies"
A considered pause.
"I have a willy mummy"
He thoughtfully pulls his pants down to show me the evidence of this fact.
"Look, see mummy. That's my willy."
"Yes it is"
"Mummy"
"Yes darling"
"Mummy, you have a big bottom"
"It is bigger than yours, yes"
"And your bottom moves when I touch it"
"Yes"
"Does my bottom move when I touch it?"
He hits himself on the bottom.
"No. Mine doesn't. It's just yours that does mummy".
+If you want more of a giggle, check out the other posts who are linking up to wot so funnee here.