That line is another engagement bait phrase used on social media.
What it usually means
- “There’s actually a rule…” → implies a hidden truth or secret authority
- “Read the first comment” → pushes you to click or scroll for more views/comments
In most cases, there is no real rule and nothing meaningful in the comments—just a continuation of a vague story or a sales link.
Why these posts are structured this way
They’re designed to:
- Increase clicks and comments
- Trick the brain into expecting important missing information
- Keep people scrolling (“curiosity gap” effect)
What to look out for
If a post:
- Doesn’t explain the “rule” in the main text
- Uses emotional or dramatic phrasing
- Sends you to comments for “the real story”
…it’s usually not reliable information, just viral content formatting.
Bottom line
There’s no hidden rule here—just a marketing-style hook meant to get engagement.
If you want, you can paste the “first comment,” and I can break down whether it contains anything real or if it’s also part of the same clickbait pattern.

