This episode looks at the origins of names used in common sayings, uncovering the theories behind how these phrases came about and tracing the names to their historical linguistic roots. Gordon Bennett is linked to the son of a newspaper entrepreneur, while Flash Harry may have been inspired by a well-known conductor. The phrase Bob's your uncle could have ties to a popular music hall song from the early 20th century. Jack the Lad refers to a real historical figure whose reckless lifestyle led to an early demise — find out how Jack became a familiar form of the name John. A saintly person might be playfully called Mother Teresa; listen to uncover the meaning behind her real birth name.