Internet culture
FBF
“Flashback Friday”: a hashtag convention for sharing an older memory on Friday.
In everyday use
Someone shares a childhood photo with #FBF.
What to keep in mind
It is a posting convention, not a platform rule.
Also searched as: flashback Friday
Further reading
Original explanation and example by Perspectism. Further reading may cover the wider subject, rather than this exact wording. Edition updated 7 October 2026.
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