Definition
An urban legend is a modern folkloric story that circulates as if it were true, even though it is almost always unverifiable. It is the contemporary counterpart of the traditional myth — passed along in conversation, email, and social media rather than around a fire — and it has the same defining feature: it is endlessly retold but never traced to a source.
Urban legends typically feature a vivid, slightly alarming scenario and a friend-of-a-friend attribution. That second-hand sourcing is a tell: the story is always one step removed from anyone who could confirm it, which is exactly what keeps it from being checked.
Why it matters
How it works
An urban legend spreads because it is built for transmission. The story is short, dramatic, and emotionally charged — fear, disgust, or moral satisfaction — and it is attached loosely enough to reality to feel plausible. Each teller passes it on in good faith, adding the same vague attribution they received.
Because no version names a checkable witness, the legend never collides with the fact that would end it. Debunking requires doing what the chain of tellers never did: asking for the primary source and noting its permanent absence.