So this guy is getting married to his gal Wendy, and in anticipation of the wedding in the heat of the moment, he gets "WENDY" tattooed on his tallywacker.
Except when it's soft, all you can see is "WY"
So the get married, and on their honeymoon to Jamaica, she sees it, and is delighted.
Later, they're sitting out on the nude beach and a big Jamaican guy walks by, and the dude couldn't help but notice the Jamaican had a "WY" tattooed on his tallywacker as well.
So he waves the Jamaican over, and says, "Hey! My wife's name is Wendy too", and proudly stretches out his flaccid member to expose the entire word "Wendy".
At which point the other guy stretches his out to read "WELCOME TO JAMAICA, MON! HAVE A NICE DAY"