Dirty talk

So embarrassed... yesterday we were in bed and I was on top of him and giving him a handjob and he was grabbing my butt and he said, “whose ass is this” and I got so confused and didn’t get what he was doing and said “mine” and then he stopped and kinda laughed and told me he was trying to talk dirty and I was supposed to say “yours” and then I apologized and I felt so stupid 😂 and then I asked him to try somethig similar and he said he didn’t know anything else. Then I said well we can try saying what we want to do to each other or what we want done to us but he doesn’t wanna do that. So, my question is this: What are some SUGGESTIONS PLEASE for dirty talk we can try? Similar to the this is your ass thing please.