An artistic aesthetic portrayed by American singer-songwriter Tom Waits. It takes an avant-garde approach to classical American themes such as traditional American music (blues, jazz, rock ‘n’ roll, etc.), Beat poetry and literature, and folk stories about drifters, drunkards, and railroads.
When someone (usually a boss) walks around in front of your desk all slow and quiet without saying anything, either because they're afraid to interrupt you or they want to catch you using company resources for personal reasons.