Peacock Post
This is a term given to a social media post where the author goes over the top in congratulating themselves on their own achievement. It is linked to the line in the move "Good Morning Vietnam" where the late and great Robin Williams says with respect to the peacock strutting around feathers on display "Look at me I'm incredible check it out"
Did you read that peacock post by NAME I mean seriously if he slaps himself on the back any harder he's gonna slip a disc!