I mean, when you're using that mobile phone. It's so annoying when I'm on the train, or even worse, in a restaurant, and someone starts yelling "HELLO? OH, HI! YES. NO. YES, IN AN HOUR. OKAY." And you, what about all those gadgets on your belt? Who are you, Batman? Oh, don't get me even started on -drunk- dialing drivers. It's dangerous enough with all these idiots on the road, we don't need people squinting at their tiny LCDs while doing 130 km/h!
So, please take at look at the Ten Commandments of Cell Phone Etiquette