I had been slapped on the butt once in a while by a girl a while back. It was a bit odd - and I never quit understood why this even happened (it isn't exactly common in Germany from my experience)
But in the end I liked it (am I now a whore?).
I think it could only be any kind of serious problem for me if in some sort of professional environment a superior woman did it. However, I can see how it could be also unpleasant in a private context. Though I can not imagine it to not be something I could very well handle.
In my teens I also occasionally slapped a class mate with a really good butt on said butt. Even though we did not actually know each other very well. It was just a very slap-able butt. I am pretty sure she liked it. However, nowadays I just have to laugh when thinking of it, because I definitely would not do this these days and I am actually baffled that I did back then.
It is a horrible issue- if the woman is not hot (or is insane).
