Gosh...you really want to totally be lazy? On those rare opportunities when I have a couch day, I get up, take a shower, put on something comfy, climb under a blanket on the couch, pull up the remote, and flip through channels all day for mindless entertainment, rising occasionally to log in and check email and S2K.
Or you could go out and rent some movies to watch.
I can't stand to have totally lazy days, except on a rare occasion -- feel guilty afterwards.

Gotta do something around the house and to the car and out somewhere for at least part of the day...unless it's raining.