Replying to Good joke

there is a canadian farmer, osama bin laden, and a texan out on a walk, and they meet a magical fish. the fish says he can grant them each three wishes. The canadian asks for fetile soil, so he gets it. Osama asks for a wall around his country, so he gets it. The texan wants to know more about the wall, so the fish tells him, "its 5000 feet thick and the same tall. Nothing gets in or out, NOTHING!." So, the texan sits back, opens a beer, and tell the fish, "fill it with water"....