I know someone who used to employ his underage kid and, long story short, the boy died in a car accident.
He was sent to get groceries for his pa's bakery, only for a massive Toyota to come at full speed, hitting him, splitting his body in half as it flew across the road and his guts splattered over the sidewalk. His panicking mother came down to the road to find his dead, destroyed body covered in blood and brain bits; her breathless crying and incredible emotional pain at the loss of her child was kind of heartbreaking, to say the least.
It wasn't a pretty sight. Fortunately, I had a bottle of Johnson's lotion which I used to rub on my sore crocolisk nipples. But my opinion on this topic remains the same: no, too dangerous.