8 XXX : Spanking

~~Avoid spanking the genitals~~ Get specific consent for it and go gently, but then spank the genitals because it’s really fun!
I've seen a couple of these before - and I know there are more like them. Whoever did them, very nice work! Not everybody is a super-experienced player with lots of education. Stuff like this is important and makes it more approachable for someone who like the *idea* but is nervous about "doing it wrong", and wants just a little guidance.
What kind of phrases do you use, which words, when? How do you communicate while spanking, from beginning to the end, the tone of your voice etc....?