A man and his wife decided to get divorced.

They were in the divorce court, but the care of their children was a problem. The mother gets up and says to the judge that since she delivered the children, she should take care of them. The judge asked for the father’s justification. After a long silence, the father stood up and replied,

“Your Honor, when I put a dollar in a vending machine and a drink comes out, does it belong to me or the machine?”