My boyfriend says he wants to "pound" me and "rail me"?

Hi everyone! So my boyfriend and I have been together for literally only a week or two and he's starting to be freaky, don't get me wrong it doesn't bother me but like why? for example I texted him yesterday and he texted me "mami ill make u into a waterfall and keep pounding your😼😏" or "I'll rail u to where u can't walk for 2 weeks." That's just some of it. He also went from calling me "babe" to "Mami" overall just completely just changed. When we first met he was a good friend of mine then poof! freaky mode activated! What's funny is he also hasn't kissed me yet but wanting to "pound" me & rail me. He always talks about my "😼" He's admitted that I turn him on and honestly he turns me on too. I love him but I feel like just a little he's only using me for sex even though we haven't had IT. Please help!
My boyfriend says he wants to "pound" me and "rail me"?
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