>>22070608It's been proven that he can retract his tongue back into his mouth whenever he wants. The reason why this doesn't happen in the games is simply because collision-detection (the thing that that can make an object wrap around another object realistically) is not very easy to implement, so lazy developers tend to find workarounds to this. In GF's case, they simply made the tongue-scarf a part of greninja's actual model instead of making a complicated, constantly stretching tongue that constantly has to bind back to scarf-form.
