This is why you need to label your files better.
A professor at the University of Toronto accidentally displayed hardcore pornography on the lecture hall projector screen while teaching to a packed class. While the spectacle lasted only a few seconds, several shocked students walked out, while others found it hilarious.
One student in Steve Joordens' introduction to psychology class managed to capture the Monday incident on Snapchat, which has, of course, been shared over and over.
The school won't comment on "personal matters," but has offered services to any student who was disturbed. Have you ever had a "whoops" mishap at work? How did you make up for it?