Originally Posted by ala_xfire

Actually, the dilly dilly is in reference to the recent TV commercials in which it indicates acceptance of whatever the KING says ! ( while true, it came from Lavender Blue, but Sammy Turner was the artist : https://www.youtube.com/watch?v=cQamRxRj6PE )
Mike drop is also from a commercial indicating that the subject is closed, whatever needed to be said has been said.