What Grinds My Gears?

I can think of a lot of things I do not particularly like, but one issue that trumps all others is that fact that many people in this world feel like they "own the place."  I honestly hate it when I see kids at lunch finish eating and go to class and when I look at their table, they have left all their trash there.  They leave it as if the elect maybe the janitor or someone else to picket up for them.  Thats not there job and if you think it is, God help you.  That brings my rant to an end.  Please be more aware of your surroundings and pick up after yourself.