I have a buddy who said his Mom had seen that movie.
She said that the theater ran an electrical line to one of the seats in the front row.
When someone in the movie got shocked, they turned on the juice.
Ahhhhhhh.....
Those were the good old days.
They electrocuted you for entertainment.
Later on in life, when I did drugs ... including acid ... I remembered that line ...
The Tingler. I saw it on TV as a kid and it was scary.