A team of doctors providing international aid had been assigned to a severely overpopulated tropical island with the task of teaching the island's occupants about the importance of birth control.  Having failed in their attempts to get the women to take the pill the doctors decided to take a different approach and turned their attention to the island's men.  As a result a huge talk was given to the men of the island about the importance of birth control.  One of the doctors showed the men a condom and told the men of the island "This is a condom.  So long as you wear it during intercourse your wife will not be able to get pregnant."  After the talk was over each of the island's men were given a condom and were all advised to keep on using condoms during intercourse in order to prevent unwanted pregnancies.

To begin with things appeared to be going well, but at around two months after the talk one of the doctors reported to his boss that there was a man and a woman outside who both seemed rather agitated, and the woman appeared to be pregnant.  His boss, the Lead Consultant of Reproductive Medicine, asked that the couple be shown in.  To his dismay he noticed that the man accompanying the woman happened to be one of the men who'd really struggled to understand what was being said during the talk.  He tried talking to the pair, but it soon became clear that both the husband and wife were struggling to understand English, and realising that he was getting nowhere, the Lead Consultant demanded that an Interpreter be called to be present during the consultation.

A short time afterwards an Interpreter arrived and the Lead Consultant said to the Interpreter "Could you please ask this man why he didn't wear a condom as he was instructed to?  If he had done as was asked neither he nor his wife would be in this situation now!"

The Interpreter turned to the couple and translated the doctor's question, then listened to the response.

"So what did he say?"  asked the Lead Consultant, feeling somewhat exasperated.

The Interpreter turned to the Lead Consultant and said, "He swears that he did wear the condom!  In fact, he absolutely insists that he never even took it off!!"

"Well, in that case" replied the Lead Consultant "how in God's name did his wife manage to get pregnant?"

The Interpreter put the question to the husband, who told him what had happened.  Having listened to the husband's answer the Interpreter turned back to the Lead Consulant and stated "He tells me that by the end of the sixth day he had to take a p1ss so badly that he cut the end off..."