True, it's a bad analogy, but the threat is still there. "Popping" a kid in the mouth sounds like outright child abuse to me. Where did the kid learn to sass back from? Spend time with them and teach them properly when they are little and they will behave well when older.
Thats assuming the kid wants to play with you. Many parents who force there kids to spend time with them when the kid doesn't what to end up making the situation worse.
All little kids want to play, and if you start playing with them and spending time with them while they are still infants, they will grow to cherish this time. It's the kids who are left to their own devices who get into trouble the most.
Taking care of a child for two or three hours is a lot different than taking care of them for 18+ years.
Darn straight! That's why people ought to consider very carefully if they are ready to spend that much time raising a child and giving them the attention they need before they do anything to result in having a child. It gets tiresome to play repetitive games with a child, but that's what they learn from and you have to do it if you are a parent. And if you didn't give it that much thought in advance, then too bad, suck it up and deal with it, because that's a little person you need to raise.
The toughest part is for someone who was spanked as a child to learn how to discipline their children without resorting to spanking because they haven't seen how other methods work. A better analogy than the one used earlier is that of spritzing your cat with water every time it climbs on the kitchen counter. You think you are teaching it to stay off the counter tops, much as you think spanking a child is teaching him/her to behave well, but all it teaches the cat is to stay off the countertop when you are there or when it sees the water sprayer.