These very, very old ones popped into my head tonight,

A old man gave me a few bits of advice when I was young. The first was “Never dig for clams in a minefield”. That always was strange to me given clams don’t grow in dirt. The second was “Never try to milk a bull”. That seemed really obvious to me at the time and even now. I’ve seen enough specials on bulls to know they don’t like it. Unless it’s Dennis Rodman.
These thoughts are courtesy of White Rhino.