greninja's tongue | Bulbagarden

So I take it that its tongue begins to seep out of its mouth towards the right, right? And then forms what wraps around its neck?

That's what it looks like.

Oh, and for those saying it looks painful or uncomfortable, it's probably evolved in a way that makes it more durable and resistant to the normal stresses of everyday life. Although I'm not entirely sure why it would benefit from having its tongue stick out like that. Probably just a Rule of Cool design. XD

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