I cringe when I see or hear of parents that discipline their children out of anger. There's arm pulling/yanking, slapping, knuckling, hair pulling, flicking, pinching, and I'm sure the child is benefitting from it in a multitude of ways (note sarcasm).
Does asking for some candy warrant a neck wrench? Does being bored and hungry warrant an arm pinch that leaves a bruise? Does having an opinion warrant a slap? Does going to the store/any place when a child is tired and hungry sound like a good idea?
A child that responds well to correction, will never think to be afraid or flinch. The child responds well, because they feel loved and safe around you. You've done a lot more hugging and kissing than you've "disciplined" them.
If you MUST hurt someone, try that sh!t on me; I'll introduce your teeth to the back of your skull.