Another coffee shop moment

Passing time while my son was at his reading tutor's (he has dyslexia; she's marvelous), I, of course, went to the nearest coffee shop and, looking around for something to draw, spied this bicycle with the bright yellow fender out the window. Before I was quite finished, though, the owner came out and rode it away. I couldn't remember the color of the rest of the bike, except that it wasn't yellow.

While I was sitting there drawing, three men came in and one of them ordered an iced drink, which was served in a plastic tumbler. He must have expressed some concern about that, for I heard the barista say, "It's corn plastic," in a reassuring tone. This was followed by some conversation about how prevelant this corn plastic seems to be these days, and speculation about how exactly it breaks down. Then she said, "And you can feel good that the coffee is from a small women's cooperative in Guatemala." This seemed to please or impress him, but then he asks, "Is it organic corn?" The barista didn't know, but supposed that "they had to do something with it to make it grow."