What are the “Rules of Typewriter Club”?

In the vein of Fight Club, what would the rules of Typewriter Club be? What are the commonly known rules that typewriter users and collectors know that the uninitiated should be aware of?

I’ll kick things off with a frequent admonishment:

The first rule of Typewriter Club: Don’t “lubricate” the segment with WD-40.
The second rule of Typewriter Club: DO NOT lubricate the segment with WD-40!

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