Couch Warrior 

An ignorant person who knows little about the finer points of MMA techniques and skills, who has never been in combat but sits on the couch as a spectator and with supreme confidence gives his expert opinions (actually an idiot's view) to anyone who will listen. Couch warriors also give people the benefit of their profound ignorance by making stupid text comments on websites that cover MMA news.

I wouldn't bet on the fight based on his opinion; he's a couch warrior.

Couch Warrior by Backgammon_Turkbuttkick September 24, 2011

couch potato warrior 

A person who advocates involvement in military or stratigic policy on a 9 or 10 scale, when in their own life, have never, or will have never been at that level of the identical risk.

Rush Limbaugh and Dick Cheney clearly define the couch potato warrior, as opposed to say, Colin Powell.

couch potato warrior by Guido1 May 31, 2009