Having no other choice, Dean confided in his grandfather, letting Samuel Campbell know who he was and why he had been sent back. Samuel sized him up and said, "Future Boy, huh?"
It's the contention of Toobworld Central that Samuel was making a reference to a 1950s TV series about Captain Galaxy and Future Boy. In Toobworld, Captain Galaxy was played by Moe Stein and the young actor who played Future Boy was named Kenny.
The audience viewing in the Trueniverse met these two men on an episode of 'Quantum Leap' when Sam Beckett leaped into Kenny on October 6th, 1957. It appears that he was there to convince Moe's daughter to keep the old actor out of a home for the aged.
The show was on the air less than twenty years before, so Samuel Campbell was probably already a young man with a family; he probably watched the show himself while cradling his infant daughter, Mary.
That's my story and I'm sticking to it. In fact, in keeping with the Allman Brothers song we heard in this episode, I can declare:
Lord, I was born a splainin' man!