Bagel Heads

An upcoming episode of National Geographic's Taboo series features Japan's newest body modification trend: bagel heads.

Recipients create a bagel-shaped knot on their foreheads by injecting saline solution into the skin, causing it to swell. After reaching its maximum puffiness, the injector uses his thumb to create an indention in the head — kind of like a thumb-print cookie.

The modification lasts 18-24 hours. Nat Geo shows how the process is done, but the video does leave a lot of questions unanswered. For example, does the forehead become saggy after repeated use? Did we learn this from the aliens? And what do they think about all of this anyways?

Tune in Thursday night at 10 p.m. EST to find out if our concerns are addressed.

The video below is graphic, and once you see it, there's no un-seeing it. So, after you're done, watch this GIF music video to make yourself feel better.