Those who get off playing with their cell phone or PDA in public. Rather than interact socially, they regularly excite themselves by fondling the free apps they can download to their iPhone.
Mitch: What's Lance doing at the end of the table?
Uncle Tony: Didn't you know? Lance is a phoneturbator. He has his guilty pleasures when it comes to free iPhone apps. Ever since yesterday he's become comfortable with who he is and phoneturbates whenever he gets a chance.