[Egon raises an eyebrow, then stares down at the Elgyem. Carefully, he extends a hand to grab at one of her arms to inspect it. Kölliker bubbles excitedly.]

alien!!!!!!!!

Please, Kölliker. If this was an alien, it would have originated from an extraterrestrial source. This creature clearly hatched from an egg native to this dimension.

[He then turns to Venkman, fixing his glasses as he frowns.]

I don't suppose you've been the one telling her this.