The biggest hurdle they faced was that the teacher insisted on no baby talk.

"You need to use 'big people' words," she'd always remind them. She asked Chris what he had done over the weekend.

"I went to visit my Nana."

"No, you went to visit your Grandmother. Use big people words!" She then asked Mitchell what he had done.

"I took a ride on a choo-choo."

She said: "No, you took a ride on a train. Use big people words". She then asked Bobby what he had done.

"I read a book," he replied.

"That's wonderful!" the teacher said. "What book did you read?"

Bobby thought about it, then puffed out his little chest with great pride and said: "Winnie the Sh*t".