[xattt]

There was a comment years/decades ago on slashdot about someone walking under a malfunctioning ceiling-hung security CRT TV, and feeling like they were hit on the head when they walked under it. The assumption was that the TV had an abnormally large magnetic field (or the person was particularly sensitive).

I’ve tried to replicate it, but my chances have become slim-to-none with CRTs going out of fashion.

[andrewflnr]

The "malfunctioning" part is probably critical to replication.