Difference between Potentiality and Reality

Youngest Son: "Tell me Daddy, what is the difference between 'Potentially' and 'reality'?"
Dad: "I will show you".

Dad turns to his wife and asks her: "Would you sleep with Bill Gates for 1 million dollars"?
Wife: "Yes of course! I would never waste such an opportunity"!

Then Dad asks his daughter, if she would sleep with Brad Pitt for 1 Million dollars?
Daughter: "Wow! Yes! He is my fantasy!"

Then Dad turns to his elder son and asks him: "Would you sleep with, Tom Cruise for 1 million dollars"?
Elder Son: "Yeah! Why not? Imagine what I could do with 1 million Dollars! I would never hesitate!"

So the father turns back to his younger son saying: "You see son, 'Potentially' we are sitting on 3 million dollars, but in 'Reality'
we are living with 2 prostitutes and 1 gay.