I read this sentence in "Kafka on the Shore":
A pretty bare-bones meal, though there were unlimited seconds on miso soup and rice.
Now, M-W dictionary defines the word "second", in this context, as:
(informal) A second course or second helping of food at a meal.
Now, as I take it, after eating an additional serving of food after finishing your first one, if you grab another one it's your third and the next one fourth. So, unless you consider the most recent of the meals as your first one, the phraseology is wrong in my mind. Am I correct?