Young boy asks his dad for help with his homework. (NSFW)

A young boy is doing his science homework, and asks his dad for help.

"Dad, whats the difference between Theory, and Reality?"

"Well," says the Dad. "I'll tell you what. Go ask your sister if she would fuck the man who lives next door for $500,000."

So the son goes upstairs and returns a few minutes later and says to the Dad, "She said she would."

"Ok son. Now go ask your mother the same thing."

So the son runs into the kitchen, and asks his mother. A minute later he returns and says "She said she would too."

"Well then. In theory, we're sitting on $1,000,000 here. In reality, we live with a couple of whores."