The Milking Machine
A tramp was really weary and needed a place to stay for the rainy night. So he sees a barn up the road and asks the farmer if he can stay in his barn for the night.
“Sure,” says the farmer, “as long as you promise not to stick your stick into the three holes.” The guy promises,and the farmer leaves him there. Of course, he can’t resist, and the farmer is woken up in the middle of the night by screams coming from the barn.The farmer goes down and finds the guy stuck in the third hole.
“What are in these holes?” the guy yells.
“Well,” says the farmer, “one of them’s my daughter, one’s my cow, and one of them’s an automatic milking machine that doesn’t stop until it gets four litres.”