That was what I was thinking when I had to watch this one movie for film class. It's literally an unmoving wall and someone decided to stick in this super sonic high frequency sound that's hazardous to my health to listen to. I wanted to die (>T_T)
It lasted for a whole hour. It's called Wavelength from 1967. Do not come near it Kev. I don't want anything bad to happen to you <3
Lol, don't let your curiosity get the better of you! It's bad bad! I had to sneakily cover my ears while watching it so that my film prof wouldn't notice. xD