The Baby Joke

Once upon a time there was a Baby. The Baby was very happy, living with its Mummy and Daddy.
As the Baby started growing older, however, it's Mummy and Daddy began to get rather worried, because the Baby didn't appear to be learning to speak.
But the Baby was so happy, they thought; but still, they were worried.
The Baby got to the age of three, and still hadn't learned how to talk.
One morning, the Baby was sitting in its high chair, and Mummy and Daddy made some porridge as usual and started feeding the child.
'Oh my God!!! This porridge is absolutely disgusting! What's wrong with it? I've never tasted anything so horrible! Take it away at once!', shouted the Baby at the top of it's voice.
Mummy and Daddy were astonished.
'We didn't know you could speak!' they exclaimed.
'Well, everything's been fine up till now', replied the Baby.