PART 1 - TONS OF PUNKS, ONE BIG JERK CHAPTER 3: TOUCHGRASS Future Polish

"The woodpecker quotation was circulating under the name “Weinberg’s Law” by 1975."

Quote Investigator traces the earliest located appearance to a 1975 publication where the saying was explicitly labeled Weinberg’s Law; a 1978 source later attributed it to Gerald Weinberg.

View Source