A Carolina chickadee is a burst of extremely loud microphonic feedback. The most common way this can be achieved is when a person takes a hot microphone and puts it in front of a working loudspeaker to obtain feedback. This action is most often used in bars around or after closing time to get unruly patrons to leave the establishment.
Man..that asshole had to pull a Carolina chickadee to get us out the bar last night..my ears is still rangin'!!!