Similar to the rusty trombone, only performed when masturbating. You insert your own thumb into your rectum (left or right hand, your choice), bend your wanker down between your legs and crank your pecker between the four remaining fingers of the same hand and your palm. The beauty of this is that you have a free hand to eat a sandwich or work the TV remote.

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.