If baby showers are hosted by someone other than the mommy-to-be, why do people ask the mommy-to-be if she's having a shower or when's the shower?

How do you answer the question?

Honestly, I don't think we're having a shower. A friend of mine and my mom both offered to host one when I was still in my first trimester and since then radio silence. I don't want to refer people to "ghost hosts." (I'm currently in 22.5 weeks.)

Even though Mr. Lime and I planned to buy everything ourselves, I wouldn't turn down a shower since that means cake, cake, cake! Plus it would be fun guessing the baby's sex.