Genie and Indian

Three guys, a Pak, a Srilankan and an Indian are out walking together one
day. They come across a lantern and a Genie pops out of it. "I will give
you each one wish, that's three wishes total" says the Genie.
The Srilankan 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 Sri Lanka." With a blink
of the Genie's eye, 'FOOM' the land in Srilanka was forever made fertile for
farming.
The Pak was amazed, so he said, "I want a wall around Pakistan, so that no
foreigners can come into our precious state."Again, with a blink of the
Genie's eye, 'POOF' there was a huge all around Pakistan.
The Indian 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
completely surrounds the state. Nothing can get in or out."
The Indian says, "Fill it up with water".