I recently read one of Rick Wakeman’s books, and he tells the story of Alan White inspiring the “stuck in the pod” moment. In a Yes concert, White was indeed stuck in a pod.
That’s No. 1 on this list of Spinal Tap-related commandments, and it overlaps a bit with this list of 11 real-life Spinal Tap moments. (Tom Petty and the Heartbreakers getting lost backstage and wandering onto a tennis court may be the highlight.)
Also, this Rob Reiner video explains why a couple of band members had cold sores. All part of a lost subplot.