The Acid Eaters

In Los Angeles, a group of middle class 'paisley-collar' office working stiffs hop on their choppers (motorcycles) and head for 'The Lake' for their Friday afternoon party... where there's nude body-painting leading to a cat fight which turns into a knife fight until one girl disappears into quicksand. They soon encounter the White Pyramid, a 50-foot tower of LSD... its one crazy trip.