Never heard that either, and I've mostly worked in professional settings where there wasn't many native English speakers, but most of the communication was in English anyways, and don't recall hearing/seeing that once. And I'm usually slightly bothered by those silly things too.
Although, “let’s flush this out” is also a hunting idiom, as in flushing out game. So that may be part of the confusion.
Never heard that either, and I've mostly worked in professional settings where there wasn't many native English speakers, but most of the communication was in English anyways, and don't recall hearing/seeing that once. And I'm usually slightly bothered by those silly things too.
"I created a story in Jira. Next refinement session we need to flush out the details."
To which the Jira bot should automatically reply, “We need to flush that sentence— and Jira— down the toilet.”
I once had an exterminator flush out an animal from my attic.
Who wants details in Agile/Scrum anyway? Flush them out! /s