Sitting on the can without a smartphone -- much like sitting at the bar without a smartphone -- is soooo boring. What are you supposed to do with yourself? Be alone with your thoughts? Talk to the person on the toilet/stool next to you? Ugh.
This video from the nice folks at College Humor totally nails our modern smartphone addiction. It's ruining our ability to keep our minds occupied when there's nothing to do. I'll be leaving my phone at my desk before the next poop I take.