The Magical Cut -and How to Heal It
The guy from The Action Lab (previously at Neatorama) cuts his hand with a plastic butter knife and manages to draw blood. Or does he? This is the magic of chemicals. He's got different chemicals on each side of the knif...
https://www.neatorama.com/2022/05/25/The-Magical-Cut-and-How-to-Heal-It/