An individual(mostly males)who takes the television remote control and won't let anyone change the channel or take it from them. These words were originally heard in "Clueless", in which Cher calls Josh a "couch commando".
"Quit being a couch commando, I want to watch Cops"
"Can you change the channel? Why not? Well if you would stop being such a couch commando I wouldn't have to keep asking."