Bf wants me to call him “daddy” I think.

So maybe tmi but yesterday my bf kept asking me to call him something [during sex] but wouldn’t tell me what he wanted to be called. We have talked about the daddy name using but to me it’s weird.. lol. He’s never been into that [name calling] stuff. I guess until now. Any thing you guys call your lovers during sex? Maybe I could try something else.. thanks in advance.