A couple was having trouble conceiving a child, so they went to a doctor.
He examined them, and concluded that the problem was one of insufficient penetration. He suggested to the man that they try therear-entry position.
The man said, "What is that?"
The doctor replied, "Just watch the dogs and do like they do."
The man said, "My wife is very shy and she won’t do that."
The doctor replied, "Try giving her a glass of wine or two and she will lose all inhibition."
Some while later, the doctor met the man, pushing a pushchair.
"I see it worked!" the doctor said.
"Yes it did Doc, but now the problem is . . . my wife is an alcoholic!"
"How did that happen?" the doctor asked.
"Well, every time we did it . . . it took seven or eight drinks just to get her out into the front garden!"