I unintentionally blurted this one out to someone who was thinking of getting rid of his cable service. It is a mash up of “pull the plug” (to force something to end) and “cut the cord” (discontinue cable service). Both expressions involve discontinuing something, hence the mix up. This one also comes free with a public service message: always pull the plug, not the cord! Now do you see how useful and helpful this website is?