Most Helpful Girl
can you? yes.
but do most people do this? no.
too often, either one or both parents will use the kids as pawns against his or her ex. my mom had full custody and i lived with her... i spent weekends at my bio dad's, though he spent those times trying to either buy my affection with expensive things or talking shit about my mom in an attempt to turn my sister and i against her.
(the irony: he was the one who cheated on her, sent all 3 of us to Europe with one-way tickets and walked out the day we got back.)
Most Helpful Guy
Normally the woman gets all the kids and the man gets all the bills.
If She doesn't share the kids she might get a slap on the wrist, while a man will lose drivers license, any license his work might rely on, and finally jail.