Difference between potentially and in reality

I thought I would return with something funny :D

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: Waoh! Yes! 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: 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 1 gay!