It’s been a long time since I had my teeth cleaned.
So long, that the tartar buildup warped the shape of my teeth and gums significantly, but my tongue easily got used to the gradual change in topography
A bit of tartar broke away, and the resulting jagged crag drove my tongue insane. I licked that spot constantly.
When I finally had all the tartar removed, my teeth were clean and tartar-free smooth.
My tongue, unused to the new shape, roamed the interior of my teeth crazily like an idiot in a round room told to stand in the corner.