Tongue x-ray test (Patreon)

I wanted to throw together a test of using the x-ray effect for licking. I'm about to upload a poll, asking whether people like the effect for licking or just for penetration. 

And yes I know the tongue movement is the opposite from the head movement, and the x-ray box shakes a little. It's easy to fix in the game, but a pain to fix in gif form, so just ignore that for now. Also, this is the first BBW scene in the game for people that like that.