Yeah, I think this is the wrong end of the stick. It's in the Humour section.
Top hit in google is us. There's not a single news story of this happening. There's not even a story of a valet suiciding by any method.
I *really* doubt that people who have not seen death close and personal (i.e. just about all of us) *could* just stand around like the depiction if someone really was hanging themselves out of frame. We simply do not have the emotional tools for it.
In short, I suspect this was a low speed shunt, that Miles has tagged with a humorous (in the correct perspective) tagline.
C