I was riding the MUNI train today thinking about how much my back hurt just barely pressing up against the seat when the train came to a sudden halt, causing me to lurch forward, then slam back into the seat. The Chinese man next to me went, “Ai yo!” and several people clamored in their seat, murmuring about how that was a hard stop. I remained silent (or stoic) just cursing myself for having such a decrepit back, while also wondering what people would do if I very emphatically yelled, “OW THAT REALLY HURT!” Because seriously, it did, but at least we didn’t slam into another train especially since I was foolishly sitting in the second car which probably would have gotten mangled.