ye

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I have drawn a smiley robot with a vacuum hose coming out of her mouth, but as for a completely vacuum-themed lady, hmmm... I might have to think about that.

That depends. If it's just like, a straight up regular battleship, then idk.
If it's a transforming mecha or mechanical lifeform that has a battleship form, then yes. If it's a Kantai Collection girl, than also yes.
Maybe if a regular battleship could suck in or slurp with it's cannons or some other hole thing and maybe burp then we might be onto something.

I'm not really into it

Absolutely, 100%. There's not much girl or gal ass that I wouldn't let smother me

That's a really tough one, there's a lot of good ones.
Most fish I guess, can't go wrong with a big hungry fish. Also anything with a long neck, so quite a few dinosaurs and birds. Frogs and toads are another great one. And then there's slugs, those are amazing. Oddly, most bugs and spiders are also really cool in vore, at least when swallowing whole. Also worms.
I can't really decide, there's so many good ones

awawawa >w<

I did and I am drinking it now and my body very much needed it