Originally Posted by BookMouse
I'm not 100% sure they coined it -- he who registers wins -- as I recall hearing the name of that 'law firm' when I was in grade-school which predates CarTalk (and most modern technology). I don't think they could do much to go after him considering that it's long-since passed into the national lexicon without their lawyers getting involved -- to keep it, you have to defend it.
Actually, you do not have to register to assert a common law trademark. Also, they did not assert use until 1995, after I wrote my book!