Wow! Mr. Hands was one of those videos that managed to traumatize me a bit simply because I couldn't fucking understand why someone would want a giant horse cock shoved up their ass. Then I found out the man died so I watched a man kill himself too, meh he deserved it I guess, too bad it was doing what he loved.
Looks like we need to add Horsefucker to the spectrum. I also don't think his autism is mild.
One thing I remember about the Mr. Hands video is that the video that was circulated around online was NOT the video where he was fatally injured, meaning that this is something he routinely did and wound up having a very predictable accident. Getting punched in the lungs through your asshole is a horrible way to go.