Virtually a whole room full of us did!
It was on a very hot summers day in 1972. I was in the final year of an electrical apprenticeship with the National Coal Board. As part of our training we had to spend 5 weeks every year at an engineering training centre where on occasion we were required to watch 16mm films related to the industry.
On this particularly hot day we returned to the classroom after a very good lunch to find the blackouts in place and a film already laced up in the trusty B&H. The 20 minute b/w 'epic' was about productivity and consisted of the then NCB chairman framed in a head and shoulders shot talking directly to the camera. Within minutes I was asleep.
I, and several others woke to a brilliant white screen and the sound of the film tail flapping about - even the instructor had fallen asleep
Needless to say we didn't learn much that day.
I have since acquired over the years about 90 reels of these films, some of which are quite graphic when depicting accidents and bad practices, they were meant to scare us.