"Whose Child" joke

A man and his wife in court are getting a
divorce.
The problem was who should get custody of the
child.
The wife jumped up an said:' Your Honor. I
brought the child into the world with pain an
labor. She should be in my custody.
The judge turns to the husband an says' What do
you have to say in your defence?
The man sat for a while contemplating.. then
slowly rose.' Your Honor. If I put a dollar in a
vending machine and a Coke comes out.. whose Coke
it. . the machine's or mine?