[sammyg2]

I remember one time when I was young and was acting up at the dinner table. My mother told me to stop but I ignored her and continued. Dad said "that's enough".

For some reason, I decided to call his bluff and test the lines to see just how much I could get away with. IOW I continued my shenanigans in defiance.

Dad had a butter knife in his hand and flipped it around so the blade was in his hand, and gently reached over and thumped me on top of the head with the handle. He then calmly continued with his meal.

That got my attention to say the least (hurt like heck), and he never had to use physical discipline with me again.
That was a very valuable lesson that I am thankful for and a better person as a result.

I don't recall ever swatting either of my kids, but certainly would have if it were deemed necessary. Usually just a glance was enough. A few times I may have raised my voice.
Mom played good cop so I usually had to play bad cop.