A computer potato is one who downloads media through file sharing networks such as bit-torrent and spends much of their time watching shows obtained. The type of media could range from movies to anime to japanese drama episodes.
Dude, that guy stays in his room and watches shows on his computer all day long. He's such a computer potato!
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.