The other day, my family and I went to a McDonald' in Brooklyn. When I asked the clerk to "super-size" our meal, she told me McDonald's no longer super-sized meals. How could I have forgotten? The chain started phasing out the practice in January. The biggest conventional size for fries and soda offered at the restaurant we visited is now "medium." For an additional 40 cents, one can get a "large."I paid the forty cents, and also bought three little chicken sandwiches from the "dollar menu." I didn't need three sandwiches, but felt silly ordering just one. Had I been...