An older man had met a younger woman, but unfortunately he was unable to last very long before he would orgasm during sex. A caring man, he was concerned that he was disappointing his new lover, so he called his doctor for advice.

The doctor told him that masturbating before sex often helped men lastlonger during the act. The man decided, "What the hell, I'll try it."

He spent the rest of the day thinking about where to do it. He couldn't do it in his office. He thought about the restroom, but that was too open.

He considered an alley, but figured that was too unsafe.

Finally, he realised his solution. On his way home, he pulled his truck over on the side of the highway. He got out and crawled underneath as if he was examining the truck. 

Satisfied with the privacy, he undid his pants and started to masturbate. He closed his eyes and thought of his lover.

As he grew closer to orgasm, he felt a quick tug at the bottom of his pants.

Not wanting to lose his mental fantasy or the orgasm, he kept his eyes shut and replied, "What?" 

He heard, "This is the police What the hell are you doing?" 

The man replied, "I'm checking out the rear axle, it's busted."

The cop says, "Well then, you better check your brakes, because your truck rolled down the hill 5 minutes ago!"