One of the things about myself that I have told my husband is that I sometimes feel a strong desire to call him Sir. I honestly don't know how he feels about this, or would feel about it if i did. His family was not formal and didn't use that honorific, even for grandparents. Although he has taught our boys to use it appropriately in the larger world, they only use it at home, for him, if they sense they have crossed a line far enough that they need any redemption they can muster. I don't think he would have ever considered my calling him Sir, it just isn't part of his cultural vocabulary that way.
For me, at times, it burns in my brain, but i can't get it out of my mouth. It feels silly, or young, or contrived and artificial, or well - honestly, maybe more openly submissive than i can do. It has come now to feel like a scene in a tv show or movie -where one character wants to say "i love you" but has thought about it for too long, looked for the right time, completely overanalyzed it, so that it now has more baggage than actual meaning in her mind.
It isn't a thing that has to be done - if he wanted it - I think he would say so. Our communication has become more respectful and I find myself less and less prone to angry or snarky responses, even when I'm upset. I'm not perfect (yet), but I am not niave enough to believe that i couldn't be angry or snarky even using the word "Sir."
If he were to demand it or even ask for it, i imagine i could do it. I imagine it would clear things up, remove the mental blocks, and it would be done. On the other hand, I also imagine that there would come times that it would be done somewhat grudgingly. Which means that it is all up to me - it will (or won't) happen because of what I feel or the meaning I attach to doing it. I guess I need to figure that part out, or let go and just see what happens.