Probably not what the Rev. W. Awdry wrote

The Princess was so delighted to be reunited with her younger brothers after their sojourn in Cork, she began to “read” to them “Thomas Comes to Breakfast”. As I was watching them indulgently I was startled to hear the following:

“Don’t be so silly,” said Percy.

“I’d never go without my Driver” said Toby earnestly.  “I’d be frightened.”

“Pooh!” boasted Thomas.  “I’ll show you bastards.”