To announce you are going to flounce from an internet group in a post meant to cause drama and leave unanswered questions.
After Betty found the joke offensive rather than funny, she posted a vague aflouncement to the Facebook group.
by Gray green sky September 08, 2018
A portmanteau of 'announcement' and 'flounce', as in when a member of a social media group leaves but with the need to angrily announce their flounce for all to see.
by Divan Roets April 22, 2019