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

Zymurgy’s Law of Volunteer Labor: People are always available for work in the past tense.

 Goofy guy’s critique of Zymurgy’s Law of Volunteer Labor: i cannot remember when i needed help on a project when this law did not apply; i also cannot remember when someone needed me for help on a project this law did not apply to me…but then, there are a lot of things i can’t remember.