Hey, Your making shapes with your tongue and stocking it out different each time lol ... The 2nd last one looks similar to mine as You can see teeth marks on the sides from pressing against your teeth which is normal for a lot of people. you can make your tongue skinny or fat depending on how you stick it out or flex it... I`m not a doctor but it looks like a tongue to me... My wife`s tongue is different to mine and I`m sure most people don't even know what their tongues look like... If your not having difficulty eating, drinking or talking then I would keep it in your moth and stop thinking about it...If you think too much about how you talk you will start to analyse every word and pronunciations almost waiting for that one or few times a day you actually to stumble on a few words but hey its going to happen if your setting your self up for it and making yourself anxious about it .. I've been there too and analyzing words and speech does nothing but increase your anxiety, I do it on and off for months... I have been told if you have a problem with that area you wont have to continuously look for it... I think your good to go Twitchy !!