I read the phrase "hear here" on a lj message board today and started a small discussion about it on that board.
I don't know what the history of it is but I know it's in the bible.
Then a wise woman called from the city, "Hear, hear! Please tell Joab, 'Come here that I may speak with you.'" (
source)
WOuld you qualify that as a Mondegreen.or is that just a single person's mistake.