“East is Least and West is Best”. Used in navigation to convert from “true” directions measured versus the Geographic North pole, and magnetic directions shown on a compass relative to the magnetic North pole. “East is least” means subtract east variation, while “west is best” means add west variation, variation being the angular difference between the two poles at any given point on Earth, e.g. your location.
“I is for Him and E is for her”: How to remember the male and female forms of the name Francis / Frances.
On Old Olympus’ Thorny Top A Finn And German Vaulted And Hopped. The names of the 12 cranial nerves exiting from the gaps between the top human vertebrae.
I don’t remember all the nerves’ names any more, but I think (without Googling) that it goes Optic, Ocular, Olfactory, T???, T???, Auditory, Facial, A???, G???, Vagus, A???, H???. 5 of 12 isn’t too bad since it’s been 29 years since I took that class.
“Fat, Female, Forty and Flatulent”. The med-school diagnostic memory jogger for (IIRC) kidney disease. If it’s not kidney, then it’s one of the nearby related organs. I found the mnemonic funny & memorable, the disease (which it turned out I didn’t have) less so. Perhaps unsurprisingly I had none of the 4 Fs at the time, so why the doc told me the jingle is lost in the mists of time.
As to AntaresJB’s stalagmites & stalactites, I always remembered that stalacTITES must stick TIGHT to the cave roof or else they’ll fall. By process of elimination, stalagmites must be the other ones on the floor.
Some years ago my wife informed me that nuts, bolts, screws and whatnot operate on the “righty-tighty lefty-loosey” system. I had never needed that rule, but now the saying’s stuck in my head.
I’m sure I’ll come up with more later.