a couch potato
Meaning: You can say someone's a couch potato if they're very lazy and they spend a lot of time sitting around watching TV and eating junk food.
- Since he lost his job, Marty has become a couch potato.
- How can you expect to feel good and look good if you're a couch potato? If you turn off the TV, get some exercise, and eat healthy food, you'll soon look good and feel great.
When he was out of work, Frank was a couch potato and he