the.com/fish story

A fact that gained weight every time it was retold.

means An exaggerated, barely-believable tale told as truth, especially one that inflates the teller's own exploits.

from Comes straight from anglers: every fisherman's catch grows a little in the retelling, and the one that got away gets bigger with every telling too. The phrase surfaces in American English in the 1800s as a label for any boastful, unreliable yarn — the fish long gone, but the story still swimming.

origin
anglers exaggerating catch size since forever
growth rate
inches added per retelling, data pending
cousin term
tall tale with a fishing license
first recorded use
american english, early 1800s
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