Couch Potato:
Couch potato = lazy person. A lazy person buries themselves in the cushions of a couch in safe, sedentary comfort, "vegging out" mindlessly in front of the TV, eyes in a fixed, submissive stare. A couch potato never leaves the home, and cannot be motivated, having everything nearby so they never have to move.
A comfortable sofa is fertile soil for the couch potato.
Road Hog:
Road hog = territorially aggressive driver. The territorially aggressive driver takes up far more space than they need. They tend to push aside other drivers in their efforts for territory and destination, and in doing so, are impolite - even outright greedy, and are deemed unintelligent.
Passive drivers fatten the road hog.
