I remembered the case. The matter was in high school, just began to appear phones with polyphony (what are you! The sound of the sea :)
Lesson of Aglycki, 2 girls constantly talk, chicking, the teacher all the lesson makes remarks. And there was something up to their party, read it completely. He turns his back and takes a few steps. And then it was supposed to happen that the guy sitting behind them, the cell phone gave a horse rust to the whole class. There is no pause. and silence. The teacher with O_O eyes turns to her friends:

Girls, what are you?! to

The class could be held...

P.S No, I did not study in the same class with Sobchak