At the bar

Bubba and Bo would often go drinking at a nearby college bar. Bubba always seemed to get lucky, while Bo rarely made it past second base.
One day Bo asked Bubba what his secret was.
Simple replied Bubba, "I take the girl out way back in the boonies, about twenty miles from town. After I park the car, I tell her put out or get out. Its that simple."
Bo decided to give it a try. The next time he got a college pretty in his car, he went driving, way way out there, found a deserted lane, parked, turned to the lovely lass and said, "Get out, or I put you out."