I think we learned both OILRIG and LEO.
We definitely learned “Every Good Boy Deserves Fudge” for the music keys. Mmmm. Fudge.
All the good mnemonics are reserved for medicine.
For the carpal bones of the hand, we learned:
Tender tits can’t hurt so love them passionately
To which the girls in our med class rebutted:
Tremendous testicles can hang significantly lower than penises
The cranial nerve mnemonics are also well known.
I made a slight goof here…apparently the mnemonics don’t work as well as I thought…
For the treble clef, we learned “Every Good Boy Does Fine” for the lines, and the simple “FACE” for the spaces. For the bass clef, we had “Good Boys Do Fine Always” for the lines, and “All Cows Eat Grass” for the spaces.
I agree with Dr_Paprika. Medicine does get all the best mnemonics. There’s even a website (cunningly called medicalmnemonics.com ) about them.
My particular favorites are for the cranial nerves:
Oh oh oh to touch a fresh virgin’s glistening vagina and hymen.
Or for the branches of the external carotid:
Some anatomists like f***ing, others prefer S+M
From this thread:
[“How I need a drink! Alcoholic, of course, after the heavy chapters involving quantum mechanics.”](http://…but it’s pi to fourteen decimal places.)
Different shapes of electron orbitals are designated by the angular momentum quantum numbers, or by the corresponding letters s, p, d, f, and g. “Sober Physicists Don’t F*ck Giraffes.” (The letters themselves are carryovers from spectroscopy, where they stood for sharp, principal, diffuse, and fundamental.)
All the intermediates in the Krebs cycle for sugar oxidation: Creative and inspired kissing satisfies sensuous females more often.
we learned LEO says GER in 1st semester Chemistry, and OILRIG 2nd semester. So the lion one sticks out in my mind more.
others I often use:
“My brother George has extremely noisy cassette players” - the countries in Central America, form north to south: Mexico Belize Guatemala Honduras El Salvador Nicaragua Costa Rica Panama
To remember which forms of RNA are most numerous in a cell, I think of the band REM, and remember:
RTM - ribosomal, transfer, messenger
You can use the knuckles of your fists to remember which months have 31 days: stick them next to each other. Every knuckle is a 31-day month, every “valley” in between the knuckles is a 30 or 28-day month.
For reading music (albeit slowly!)… Every Good Boy Does Fine spells every line. FACE for the spaces.
Colours… ROY G BIV (it’s a name – don’t ask me who needed an acronym to remember the rainbow, though)
I also learned MVEMJSUNP for the solar system, only I learned that the P was for “pickles”
I find acronyms the best way to remember lists of things, and (when necessary) I often create and memorise a few sets before exams. I still remember this one 6+ years after a high school anatomy final: DJICATD (for the sections of the intestine)
Hey Mauve Dog, I just noticed you learned the same acronym that I did for the treble clef. I never learned one for the bass clef; that would’ve really come in handy 15 years ago before I gave up piano lessons in frustration. 
THEY’RE NOT ACRONYMS!!!
Miriam-Webster:
Acronym: A word (as NATO, radar, or snafu) formed from the initial letter or letters of each of the successive parts or major parts of a compound term
“Compound Term” being the crux of the biscuit.
We are discussing Mnemonic Devices
Also Miriam-Webster:
Mnemonic: Assisting or intended to assist memory.