
The Tingler will feast on your fear
Get scared and the thing will appear
It hides in your spine
just waiting to dine
Be glad that it's not in your rear

Vincent Price drops LSD and scares the crap out of folks in an attempt to reveal The Tingler (William Castle, 1959). Trying to scare the film's audience, producer/director William Castle created one of his patented gimmicks, "Percepto". The effect amounted to rigging a certain number of theater seats to vibrate when "The Tingler" was loose on screen. Title cards urged the audience to scream, explaining that a scream was the only way to dissipate fear, and thus diminish the title creature's fear-fed power.