Authors:

I've found that there are only two kinds that are any good: slang that has established itself in the language, and slang that you make up yourself. Everything else is apt to be passe before it gets into print.

Raymond Chandler, Dorothy Gardiner, Kathrine Sorley Walker (1977). “Raymond Chandler Speaking”, p.80, Univ of California Press
I've found that there are only two kinds that are any good: slang that has established itself in the language, and slang that you make up yourself. Everything else is apt to be passe before it gets into print.