When he explained his problem, the doctor told him, "Well, here's what you do: An hour before you're going to have sex, you masturbate. That way all the anxiety and tension will be gone, and you'll be able to last longer."
He returns back the office to find his phone ringing. It's his wife, and she says, "You know honey, I'll be waiting at the front door, ready to attack you tonite!" Well, with his new found confidence he replies, "Not a problem, baby! I'm going to RAVAGE you tonight!" and he hangs up.
Then he looks at his watch. Only TWO HOURS... Uh oh! He frantically looks around the office... No empty office with door locks... No doors on the stalls in the men's room... He can't decide what to do, so he gets in his truck and leaves.
He's driving home and looks at his watch. SHIT! Only one hour away!! Then he spots a dirt road off the highway. "Yeah, that's it! I'll pull off the road, climb under the truck, and pretend I'm working on the truck. No one will be the wiser!", he thinks.
So he stops on the dirt road, climbs under the truck, closes his eyes, starts to fantasize, and begins his "therapy". After a few minutes he feels a tug on his pants leg. Well, not wanting to break his fantasy, he keeps his eyes closed.
"Who's there?", he asks. He hears, "It's the police sir. What are you doing down there?"
Still with his eyes closed, he says, "Just working on the rear axle sir."
The policeman replies, "Well while your down there you better check your brakes, because your truck rolled down the hill about five minutes ago!"