Pepsi ?

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