What does NSF mean in slang?

In slang, NSF can have different meanings depending on the context. Some common ones include:

1. Not Safe For – Often used in phrases like “NSFW” (Not Safe For Work) or “NSFL” (Not Safe For Life), indicating content that might be inappropriate or disturbing.
2. No Such Fool – Used humorously or sarcastically to express disbelief or dismissal of a situation.
3. Not So Fast – Used as a playful or casual way to tell someone to slow down or reconsider something.