and their asinine attitude at stepping into the class when you are teaching to collect bottles and cans so that they can sell them for their own profit shows as much.

Asinine? Bit of a big word for most "western losers" as you call us, but a good post. I agree the cleaning lady is being rude strolling into your class with nay a care in the world,but why do you resent her taking some old sticky bottles and cans away, if she was impolite send her away with a flea in her ear, but otherwise, you get paid, and she can earn a little money and recycle those, which is better for the environment too, wastes a few minutes of class time too with the little horrors, all good fun, guffaw guffaw.