An old man and his young wife were getting divorce at a local court. But the custody of children posed a problem. The mother jumped to her feet and protested to the judge that since she had brought the children into this world, she should retain custody of them. http://www.xue90.cn来自《幽默学英语》网
The old man also wanted the custody of his children. The judge asked for his side of the story too.
After a long moment of silence, the old man slowly rose from his chair and replied, "Judge, when I put a dollar in a vending machine（自动贩卖机） and a Coke comes out, does the Coke belong to me or the machine?"