That's nothing! He has two videos on walls, floors and ceilings, each longer than half an hour (and both of them extremely interesting) Part 1: https://www.you

That's nothing! He has two videos on walls, floors and ceilings, each longer than half an hour (and both of them extremely interesting) Part 1: https://www.youtube.com/watch?v=UnU7DJXiMAQ https://www.youtube.com/watch?v=UnU7DJXiMAQ Part 2: https://www.youtube.com/watch?v=f1kbABTyeo8 https://www.youtube.com/watch?v=f1kbABTyeo8