Some people say that the tiger's tongue is comparable to a bone scraping steel knife.

If you are licked by them, you will drop a layer of skin, so is this really the case?
Like all cats, the tiger's tongue is like a piece of sandpaper, covered with many small sharp, backwards-turned things called tongue papillae bulges, and its texture is keratin, which is the substance that makes up our nails.
These mastoids give the tongue a rough texture and are helping tigers hold on to the skin, feathers, fur and flesh of their prey.
As for whether you will have a layer of skin on your body, it all depends on how the tiger wants to lick you.
Theoretically, their tongues can tear the flesh off the bones, but if they can show friendship with each other and have experience with humans, of course, they will not lick you so hard.
But if the tiger wants it, we can certainly scrape off a layer of skin easily.