Difference between Potentially & In Reality

Youngest son: "Tell me Daddy, what is the difference between 'Potentially' and 'In reality'?"

Dad: "I will show you"

Dad turns to his wife and asks her: "Would you sleep with Robert Redford 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: "Waow! Oh my God!!! This is my fantasy!"

So Dad turns to his elder son and asks him: "Would you sleep with Tom Cruise for 1 million dollars?"
Elder Son: "Huh, 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 bitches and a gay!!"

Source from my Junior