Photorealistic surreal portrait, an adult man is shown in an extreme close-up with his mouth stretched wide open in a scream, but inside his mouth the teeth continue far beyond normal anatomy, curving inward into a perfectly circular tunnel of repeating teeth and gums that spirals infinitely down his throat. Saliva glistens between the teeth, the inner mouth fades into darkness, and the entire impossible structure is rendered with disturbing physical realism. Tight front-facing composition, harsh clinical lighting, hyper-detailed skin and moisture texture, unsettling body-horror weirdness, masterpiece.