A person who watches excessive amounts of television, has no job, no ambition, no goals set for his/her life, respects whores instead of engaging in sexual activity, also no reguards for ones possesion ex. vehicles, living conditions etc.
the slang expression often assciated with ppl who watch a lot of TV. tv is made of electron tube. "couch potato" is said to refer to the potato b/c it is a tubular vegatable w/ eyes (lil blacks specks on the potato) to symbolize some1's yeys, glued to the tube...
one is able to substitute any word of choice for potato. such as..."couch prune"....however, it has been combined with more derrogitory terms. for example..."couch fag."
The act of sitting on the couch and being in such a state that even theories regarding cosmology and engaging pastimes, such as fencing, lose their appeal in lieu of induced TV coma, abnormal snacking and fantastically longpower naps.