Originally posted by Parallax I was thinking something similar.
Back in the late 50's, early 60's when skateboards really took off there was an orthopedic surgeon in the San Francisco Bay area that claimed he put his son through college on revenue from skateboard injuries alone. I suspect corn nuts and
Laffy Taffy were the dental equivalent of skateboards.
Somewhat, obliquely, that reminded me of my wife's gynaecologist in Cape Town, Joe Meiring. Joe spent his days with his hands in tight crevices when he was not doing his day job.
Joe's hobby was doing all the maintenance on his Ferrari himself. So, most lunch times, he'd strip off his office clothes and don his overalls (coveralls in other jurisdictions) and proceed to the parking garage at work where the Ferrari was in some state of dismemberment, usually on axle stands, so as to carry out some or other task that ordinary Ferrari owners tended to leave to other well paid people. Joe was very good at all this fiddly work. I do wonder whether the reboring or piston fitting exercises gave him more pleasure than his day job.