Little Johnny: Mummy, tomorrow…

Little Johnny: Mummy, tomorrow I have an oral exam. One question the teacher will ask me is “who made you?” What shall I say?
Mum: Say God made you.
Next day, when the question came up, poor Little Johnny forgot what his mother had said, so he said, “Teacher, until yesterday I was sure it was my father who made me. But then mother said it was someone else -and I can’t remember the name she mentioned.”