So while I was in San Francisco, I took the subway to go visit my friends. It was the end of rush hour, so not very crowded once we got into the city proper. Then a guy got on, carrying a little portable speaker and a microphone, and arranged his gear in one corner.

And then he started rapping.

The song was something about peace and harmony - it wasn't very loud, and I couldn't quite make it out. Of course, my first thought was "God, what a jackass. Doesn't he know nobody wants to hear that?"...