Your instincts scream at you to get off the Island like, right away. But then again... maybe, just maybe - you try to rationalize to yourself - that you might be experiencing some severe case of hallucination. You don't see anyone else sprouting weird changes like you are. What did Carol put in those milk and sugar cookies, and can you get some more?
Speaking of food... Your stomach chooses that moment to complain to you, you realize that you hadn't eaten anything else yesterday. You're famished! You decide you'll try to escape after you fill your belly with food. Asking around, people point you towards the Elf village for everyday needs from clothes to food which is perfect - Carol had said the bakery's in Elf Village too. Maybe you can grab some more milk and cookies from there?
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A sleigh's ride later, you stand before the entrance to the Elf Village. You mouth waters at the smell of food permeating the air, and darn the food looks absolutely delicious. They seem to have every single Christmas dish down here, ranging from the gravy turkeys&mashed potatoes to puddings and cakes to salads. you eye the salad hungrily, your teeth and tongue are practically aching from your desire to eat something. Before you know it, you've already grabbed yourself a huge bowl of some of that tasty green salad and chomping through with great gusto...
At first using a fork, then your hands, you end up planting your entire face into the bowl - Lapping up the greens with a long thick tongue that looks way more fitting on a reindeer than a human, grinding them with large molars that are way more efficient than your humans ones. By the time you finish your meal, you're sporting a set of healthy teeth and tongue a reindeer would be proud of. Tentatively, you feel them out and discover that, imperceptibly, you face has protruded out into the beginnings of a muzzle to accommodate. Obvious enough for you but not enough for others to notice, and as much as you want to panic... You are too lulled by your full stomach to do so right now - simply content to just sit right where you are and rest.
Having dealt with your hunger, you lean back and consider on how you should leave this island.