Dine out on (something) American British phrasal verb
1. To go out for a meal, especially a dinner, due to some fascinating or amusing things that occurred
I have dined out on my graduation day with my friends.
Our family decided to dine out on my parents' gold anniversary.
2. To entertain others, especially over a meal, by telling a particularly interesting story about something one has encountered
My grandfather often dined out the story of when he was living on a remote farm in his whole childhood.
My kids have been dining out on the story of what happened in the haunted house on our Dalat trip.
The verb "dine" should be conjugated according to its tense.
Children or adults often say this phrase to get their friends to join in something, especially to jump into a swimming pool (pond, lake, etc.)
“Last one in is a rotten egg!” yelled Jane, jumping into the pool.