Phrogging is a person secretly living in another person's home. The word is pronounced "frogging" and gets its name because phrogs, as the people who engage in this activity are called, tend to "hop" around from house to house, as a frog might do on a lily pad.
Running for exercise and picking up trash you find along the way. It's good for the body, mind, soul, and environment! Started in Sweden but is making its way to the U. S.