Dy-Na-Mite! TV has been a source of slang almost since it first appeared.

it used to be poets and acting companies traveled from place to place, and people learned culture and expressions from them, (Shakespeare presumed when he had Hamlet say "and who is he to Hecuba, or Hecuba to he?" that the audience would know who Hecuba was.

Now, everyone know what "Master of their own domain" means.

TV creates its own culture, and propogates it. and slang, and language along the way. as to whether or not this is a good thing..well that's a value judgement.

the option exist to turn the TV off, (and to miss out on what is so funny about 'being the master of my own domain'.(see discussion in misc)