CWs are more art than science. In the current Mastodon culture, some topics like politics, NSFW, violence, etc. are almost required to have CWs.

For other stuff it's up to your discretion: alcohol, food, selfies, eye contact, etc. Mental health topics often use "mh" with a +, -, or ~ for positive, negative, or neutral.

A good CW can set up the punchline to a joke! A bad CW can spoil a joke. It's tricky.

Ultimately it's about empathy for your readers. You'll get the hang of it. 🤗

Also: some folks think CWs should be used for almost everything. Others think it's more fun without them. Some think Topic X needs a CW, others think Topic Y does.

There's no right answer; everything depends on context. Do whatever feels right to you and the people you think are likely to read your posts.

@nolan you forgot to mention that CW stands for Cookie Wizard
@toilettrouble is the Cookie Wizard the one who summoned the Cookie Monster?
@nolan i think so, Cookie Monster is the Cookie Wizard's golem
@nolan What is the protocol - start the toot with a #cw or 'CW..."?
@msjen Click the "CW" button and you can write into the field that says "Write your warning here." Other Mastodon clients may show it differently. (On Pinafore it's a âš .)
@nolan Thanks! You may stick a n00b notice on my forehead... ;o)