What on earth?

Now my boyfriend and I are kind of kinky him more so than I. I mostly just like being really rough while he’s kind of into some really weird things. He told me that he wants to “shit on me rub it all over and then fuck in it.” Gross yes I know. My response was “Honestly that sounds really gross what about something else.” This isn’t the first time he’s said that he wanted to try something like this. He also has wanted me to pee on him. 🤢 I don’t even know. What are some other suggestions of things we could possibly try aside from all of that?