Prepared to be told I am.
I was getting ready today and my partner doesn't have work today so is lying in bed. I have been enjoying just wearing comfy leggings while home (unsure if this is remotely relevant). As I am talking to him he takes it upon himself to smack me on the ass. I know some people like this, but I actually really hate it, I've never found it sexy or appealing and it stung. So I turned round and slapped him on the arm. He looked so taken aback. And I said why should you be able to just hit me with no reaction?
He is now in an absolute upset strop. I'm so sick of slapping on the ass being seen as absolutely acceptable hitting but anything else is despicable.