Everything You Know Is Wrong (1975)

Dogs flew space ships The Aztecs invented the vacation Men and Women are the same sex Our forefathers took drugs Your brain is not the boss Great news Famed daredemon Reebus Cannibus is going to perform his greatest stunt ever A leap down the bottomless comet pit to the center of the Earth Join the fabulous Firesign Theatre for another of their mindbending journeys as they explore the alien uprising in our midst Dr Happy Harry Cox is our guide under the watchful eye of mildmannered trailer park manager and member of the Funny Name Club of America Art Wholeflaffer as he presents all seekers one born every minute with the key evidence proving the thesis that Everything You Know is Wrong