Guy catches his son jerking off: "Son don't do that, you'll go blind."
Son shouts back "Pop, I'm over here."
What do you call a guy who cries when he masturbates?
A tearjerker.
Old guy says: "Doc, every morning at 7 I take a healthy piss, and then at 8 I take a big shit."
"So... what's the problem?"
"I don't get up until 9."