I heard this joke from a fellow employee few years back.
Few friends were bragging about their great ancestors. John said, “My great grand father ran faster than anyone in his town. Jerry said, “My great great great great grand pa was a carpenter when earlier pilgrims arrived in USA. He built a whole town with his two hands.
Bubba was listening and feeling jealous. He said, “My great great great great grand pa used to cut 10000 trees in a day with a hand saw in the forest of Mojave!!
Others asked, “Isn’t Mojave a desert?”
Bubba: “Now it is!”