I always assumed it was a reference to the Cathode Ray Tubes of old TVs
--Darkcraft Fri May 28 01:52:56 2010
Well, I think that's where "boob tube" came from? There was also a movie "The Groove Tube" but I think that postdates use of the term. (Just a guess)
--Kirk Fri May 28 09:33:08 2010
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