Frenchmen...

Three guys, an Englishman, a Frenchman and an American are walking along the beach together one day. They come across a lantern and a genie pops out of it.

"I will give you each one wish, " says the genie.

The American says, "I am a farmer, my dad was a farmer, and my son will also farm. I want the land to be forever fertile in America." With a blink of the genie's eye, 'FOOM'  -  the land in America was forever made fertile for farming.

The Frenchman was amazed, so he said, "I want a wall around France, so that no one can come into our precious country." Again, with a blink of the Genie's eye, 'POOF'  -  there was a huge wall around France.

The Englishman asks, "I'm very curious. Please tell me more about this wall.

The Genie explains, "Well, it's about 150 feet high, 50 feet thick and nothing can get in or out."

The Englishman says, "Fill it up with water."