It was an educator’s dream, really.
This was the asphyxia lecture, covering hanging, strangulation, choke holds, refrigerators, and carbon monoxide. So now, of course, they know who both Jack Ketch and Albert Peirrepoint, the difference between humans and horses, and why you should never try to hide from the police in a Good Humor truck. They also know the difference between hanging and ligature strangling, which I demonstrated. They can also differentiate between the carotid sleeper hold and the bar-arm choke hold. They were much less eager to volunteer after the first experience. They also know all about manual strangulation, and why you never check BOTH carotid pulses at the SAME time.
That was slightly frightening, but all their tutition is paid up, so the university is satisfied.