Man walks up to a farmers house, knocks on the door.
When a woman opened the door, the man ask if she knew how to have sex.
Not amused, she slammed the door.
Again, the man knocked, again, asked the same question.
Again, not amused , she screamed get the hell away.
Later, she told her husband of the incident. He said he would stay home the following day just in case.
Sure enough, the next day the same man returned. The husband hid with his gun while the lady answered the door.
When she was asked again if she knew how to have sex, she said yes.
The man replied, great, give some to your husband the next time you see him , and tell him to keep away from my wife.