The difference between ‘potentially’ and ‘realistically’

A young boy went up to his father and asked him, ‘Dad, what is the difference between ‘potentially’ and ‘realistically’ ?’

The father thought for a moment, then answered, ‘Go ask your mother if she would sleep with Brad Pitt for a million dollars.

Then ask your sister if she would sleep with Brad Pitt for a Million dollars, and then ask your brother if he’d sleep with Brad Pitt for a million dollars. Come back and tell me what you learn from that.’  

So the boy went to his mother and asked, ‘Would you sleep with Brad Pitt for a million dollars?’

The mother replied, ‘Of course I would! We could really use that money to fix up the house and send you kids to a great University!’

The boy then went to his sister and asked, ‘Would you sleep with Brad Pitt for a million dollars?’

The girl replied, ‘Oh my Gawd! I LOVE Brad Pitt I would sleep with him in a heartbeat, are you nuts?’

The boy then went to his brother and asked, ‘Would you sleep with Brad Pitt for a million dollars?’

‘Of course,’ the brother replied. ‘Do you know what a million Bucks would buy?’

The boy pondered the answers for a few days and then went back to his dad.

His father asked him, ‘Did you find out the difference between ‘potentially’ and ‘realistically’ ?’

The boy replied, ‘Yes, ‘Potentially’, you and I are sitting on Three million dollars.

But ‘realistically’, we’re just living with two hookers and a queer.