What does God need with a starship?

The collocation is actually quite common. I'd venture to say it's as common as your suggested replacement.

Also, "What do you want with that?" vs. "What do you want that for?"

Both yours and mine are a bit rude, implying that your purpose is not legitimate - not justified.

Of course your original isn't rude, because presumably *** has not asked for one.

Thanks a lot, Avangi.

AvangiOf course your original isn't rude, because presumably *** has not asked for one.

It's a line from a movie. And *** did ask for a starship - well, that was a fake ***.

By the way, shouldn't it be a "***" with small 'g' because it's a false one?

AvangiWhen A suggests

You're correct on both assumptions.

Edit. On the other hand, if the others had not spotted him as an imposter, and sincerely believed they were addressing ***, then they should address him as "***."

Thanks for the reply.

In the previous posting I said: It's a line from a movie. Though I had in my mind a particular movie, I still chose indefinite article instead of 'the'. Why is so? Obviously, I must be one who should know and be responsible for the choices made but in truth I don't see why I went for "a". So, help me, please.

Because if you had said, "It's a line from the movie," someone would have asked, "what movie?" You would only use "the" in this case if you had already been talking about the movie.

Thanks, Khoff.