From the perspective of one who has never actually received a meatgrinder, it looks quite painful. However some claim that a meatgrinder isn't that bad. In fact some meatgrinder fans claim that 'it's an experience.'
Bob - "With chompers like that, I'd say it was a meatgrinder."
Joe - "It was an experience."
"Do I need to do a meat grinder to make you happy?"
"Oh man, that slap made my boftt jiggle."
Jeff: Yeah, I was so faced that I ended up doing the meatgrinder all night