A good practical mnemonic

Here's a good mnemonic I found which is not a medical mnemonic, but you may meed to apply in your everyday life including medicine, esp while operating medical machinery; Very useful for orthopedic surgeons while operating during a sleepless night :-)
When you turn a screw / lid / bolt with your screwdriver / hand /spanner, which direction to turn to loosen it? May be you are very confident now and tell the answer, but people use to commit this mistake even though they know this fact. Sometimes our brain sleeps or get confused on such facts.
So here's the mnemonic: " Turn Left to Loosen; Turn rIGHT to tIGHT"