Have you considered !
Was in Grade 9 for that in Vancouver BC Canada.
Sitting in IT class, ALL the PC monitors go out at once (IT breaker triggered first). Then ALL the lights go out. Then all the emergency lights go on, in class and outside in the hall. ~3 seconds later, the entire room starts to shake violently, knocking monitors off the desk.
"ERIC STOP FUCKING JUMPING!!!!" someone yelled from across the room.
(Eric was the big kid [300+lbs in grade 9] in class.).
There we were in a Earthquake shaking EVERYTHING around us, scary as hell, and 30 high schoolers and their teacher and teachers aide were all dying of laughter from a joke.
Let me just add that camDown helps stop hackers from getting access to the webcam that I use for my work. Now I can get even more gigs as a freelancer and advertise that I have top security with my home computer and your family would say the same!