fine!
An Amish farmer, walking through his field, notices a man kneeling down and drinking from his farm pond.
The Amish farmer shouts: "Trink das wasser nicht. Die Kuhen haben dahin gesheissen." (Which is German and means: "Don't drink the water, the cows have shit in it.")
The kneeling man shouts back: "I'm a Muslim, I don't understand you. I speak Arabic and English. If you can't speak in the sacred tongue of Islam, speak in English."
The Amish farmer yells: "Use two hands, you'll get more."
so, a) not even a funny joke, b) obviously is an old xenophobic joke and the "muslim" part was recently added, since it makes no sense for an amish person to randomly be anti-muslim, and c) NOT EVEN FUNNY.