There's nothing like having someone jam a stainless steel blade inside your skull. A lot of soldiers coming from Vietnam suffered from post-traumatic stress disorder. Things were tough back in the 1970s, but just imagine the type of PTSD warriors had in the medieval times. Every time they heard a dinner knife touch a plate they would probably cower under the kitchen table. That's why those guys ate giant, cartoon-sized turkey legs with their bare hands -- or maybe they just had an extreme allergy to using eating utensils. Whatever it may be, it has absolutely nothing to do with a scalpel going into your knee to repair a torn ACL. It happened to Conor McGregor just after his fight with Max Hollaway back in August, and it appears that he's healing up just fine -- well at least healing up enough to go nuts on a heavybag. Props to Gonzo for the +100 news tip.