noun
trip story; vacation story
A story or anecdote brought back from a trip, often shared as a souvenir-like tale. The word combines お土産 (souvenir) and 話 (story).
See also: お土産
旅行から帰ったら、友達にお土産話をたくさん聞かせた。
When I got back from my trip, I told my friends lots of stories about it.
お土産 refers to a physical souvenir or gift, while お土産話 is specifically the story or anecdote from a trip.
Compound of お土産 (souvenir) and 話 (story). The exact historical derivation is uncertain, but the word is a straightforward modern coinage.