Hypothetical Vs. Fact

A little boys goes to his father and asks him the difference between hypothetical and a fact. His father tells him to go ask his mother if she would sleep with the mailman for a million dollars. The boy asks his mother and she replies "Hell yeah." He tells his father what she says and then his father tells him to go ask his sister if she would sleep with the principal for a million dollars. He asks and his sister replies "Yes." He again tells his father what the answer was. The little boy asks "So what's the difference?" The father replied "Hypothetically we're rich, the fact is we're just living with a couple of whores."