"Does your dick touch your asshole?"

So a father and his son go on a fishing trip. The son asks the father, "dad? Do you think I could try fishing?"
The dad says, "well son...can your dick touch your asshole?"
The son says "uhhh... no."
Dad says, "well fuck you kid, you can't fish".
Years down the road, the dad gets a new car, and takes the now 16 year old kid for a drive.
The son asks, "Hey dad I've been practicing, do you think I could drive?"
Dad says, "well son...can your dick touch your asshole?"
Son says, "no dad, my dick can't touch my asshole."
So the dad says "then fuck you no you cannot drive."
Years later down the road, the son wins 20 billion dollars in the lottery. The dad calls him and says, "Hey son! I'm really struggling. The bank wants to take my house and I'm in debt. Do you think I could borrow some of that money?"
Son says, "well dad, can your dick touch your asshole?"
Dad says, "son...you know it can"
Son says, "then go fuck yourself" and hangs up.