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

Perkins’ Postulate: The bigger they are, the harder they hit.

Goofy guy’s reaction to Perkins’ Postulate: i was not aware of Perkins’ Postulate until Garland Gudger, at 245, caught me, at 135,  going in the opposite direction at full speed during a Castle Heights football practice. They say i did a 540 degree flip, landing on my back. Perkins was correct.