What the fuck is wrong with you? He's not good at this at all! He's just using the tip of his tongue, and short fast strokes like that don't give the saliva time to sink in. A lot of people who first get started in shoe-licking fall into the trap of thinking this is what to do if you need to improve your time, but it completely destroys quality while tiring you out early on, without really improving things much from a time standpoint. Not to mention how haphazardly he's doing it-- somebody really needs to tell him to start at the toe and end at the heel!
I really don't get it. How do people ignore this shit. Like said above, this behavior is the same as the brightly colored frog or rattle on a snake. I love it when there's a homeless man on the train that stinks to hell and everyone ignores it. I'm holding my breath and counting the seconds to the next stop.