smartphone

It's the finger(s) you purposely keep clean when you eat something messy so you could operate your touchscreen smartphone/tablet/GPS without making the screen look like your plate. > These ribs are delicious and messy, but I have to keep my pinky clean cause its my iFinger.

The act of walking slowly or "shuffling" because you're too preoccupied with tasks being done on your smartphone such as browsing the internet, texting, etc. The Smartphone Shuffle can sometimes be dangerous for oneself, such as crossing a roads, not paying attention to surroundings

It can also be a nuisance for other people as distracted Smartphone Shufflers block hallways, stairs or sidewalks and impede flow of pedestrian. > Stop doing the Smartphone Shuffle! You're blocking the sidewalk.