The married couple faced the sexologist, complaining that after being married seven years, they were beginning to find sex boring and no longer enjoyable.
The sexologist suggested a novel way to put the pep back into their sex life. "Get yourselves fully undressed in your bedroom at night," explained the sexologist, "and totaly turn off the light. Stand with your backs on the opposite walls, count to ten and run towards each other."
That very night, they tried out the method as suggested by the sexologist. They stood with their backs to the walls, counted to ten and ran towards each other. The next moment, the couple was moaning in ecstasy.
When they switched on the light later, the husband found that he had gone inside the key hole and the wife found that the door knob had gone inside her!