A boy asks his father "what's the difference between potentially and realistically?"

The father answers "go ask you mother and your sister if they would sleep with the neighbor for 1 million dollars"

The boy is confused and asks his dad why?

The dad says "just go ask them and maybe you'll learn something"

So the boy goes and asks his sister and she thinks about it for a second and says "yeah sure why not, it's a million dollars and I only have to do it once."

The boy goes and asks his mother but she's a lot more hesitant and tries to justify it. "Well with a million dollars I could do a lot to help the family so I would do it."

The boy goes back to his father and tells him "they both answered yes, but how does that answer my question?"

The father says "well son, potentially we could make 2 million dollars but realistically we live with a couple of whores."