How to dirty talk?

So basically, me and my boyfriend have been together for a couple months now, and we’re sexually active for about 2/3 months now. We were each other first times, so obviously our sex got better and better every time we did it.

Now we’re definitely more confident in bed, trying new things etc, and recently my boyfriend told me to ‘tell him what to do’ while we were having sex. I’m pretty sure he wanted me to dirty talk, but I had no idea what to say! I literally went ‘erm, i don’t know?’ which made us both laugh and the most I could think of was ‘kiss me’ and ‘put it in’ which isn’t very impressive for a dirty talk if you ask me...

Yesterday it happened again, he wanted me to tell him what to do, but I had no idea what to say again so I just ignored it and kissed him very hard

And don’t get me wrong, I love the idea of dirty talking in bed, I just have no idea what to say:(