Hello, This isn’t really a post about learning, but maybe it will help some things stick for people.
It’s mostly just out of curiosity, what local slang do you use to remember Japanese words?
Personally mine is Red “あか”.
Where I am from if someone is angry they are said to be “Akka” and if they are going “Akka” then they are having a rage, shouting etc. This is local slang from the North East of England, around the Country Durham area.
This translates well over to the colour Red, because if you are angry you are also said to be “Seeing Red”, and the colour red makes Bulls Angry.