From my “Murphy’s Law” desk calendar archives thanks to Aunt Evelyn, Uncle Pipey, and cousin Nancy:

Meader’s Law: Whatever happens to you, it will previously have happened to everyone you know, only more so.

Goofy guy’s addition to  on Meader’s Law: The number of people who have had whatever you had happen to you previously happen to them increases exponentially with 1) age, 2) at the 19th hole, and 3) with old salts.