The village local doctor was asked to give a talk on sex education to the girls at the local high school. Knowing his wife was a bit of a prude, he told her he was speaking on hot-air ballooning. A few days afterwards the headmistress and teacher met the doctor’s wife in the street.
“Please tell the doctor again how much we enjoyed his talk. I think the girls learnt a lot from him.”
“Really? Well I am surprised.” Exclaimed the wife. “He’s only ever done it twice and the second time he couldn’t get it up properly.”