A 28-year-old man from the southern Chinese city of Guangzhou had large chunks of his arm chewed off by a 67-year-old retiree after refusing to give up his seat.
The retiree accused the younger passenger of disrespecting his elders and reportedly began punching him, causing other commuters to scatter. The altercation escalated until the older man started gnawing on the younger man's body, quickly drawing blood.
The entire horrific scene was caught on camera and uploaded to various video sites (YouTube has since removed its copy, citing a violation of its policy against graphic and shocking content).
According to Sina.com, the men were brought together to the police station, where they apologized for their behavior and "agreed to pay their own medical costs."