One day, a retarded boy and his father decide to take a trip to the Grand Canyon.
Upon their arival in the giant crack, the father yells out "HELLOOO!" They hear the echo going "Helloo!" "hellooo"
The retarded boy is amazed at the echo, and tries yelling something himself, "Yeref erad uauff kaschader!" The echo came back, "What the fuck did you say?"