“The story goes that in 1978, the Cramps made a video, filmed by Alex de Laszlo, for their song “Human Fly,” that featured singer Lux Interior (RIP 2009) in a classic movie-monster transformation scene—but it seemed like nobody saw it, or could even prove it existed.”
It exists, and it's right here.
Our friends at Dangerous Minds have the whole story.
YouTube: "Vengeance Productions Presents – The Cramps "Human Fly" short film by Alex de Laszlo Copyright © 1978"