So it turns out there is much more to the previous lunch story than I knew. Let me, Jenn, tell the WHOLE story...
1. Saturday Jenn purchases angel food cake and lazily tosses it into the fridge still in the shopping bag.
2. Sunday evening Jon packs his lunch in his lunch box, forgetting the drink. Nina packs her lunch in a grocery bag, because she can't locate her lunch box.
3. Monday morning Jon puts his lunch box in his backpack. Because Nina is not moving quick enough, Derek gets her lunch for her. She tells him it's in a bag. He gets THE BAG.
4. Later Monday morning Nina prepares, with her class for lunch. She opens her bag and sees...a cake!? She tells her teacher that she has Jon's lunch.
5. Her teacher, not realizing what was in THE BAG, helps Janina trade lunches with Jon as they pass his locker on the way to the cafeteria. Nina happily eats Jon's lunch (with the milk she purchased).
6. Approx. 30 minutes later Jon goes to his locker to get his lunch and finds...THE BAG. Being only seven and not knowing what else to do, he takes the bag to lunch, assuming it is Janina's lunch.
7. Jon eats cake (very discreetly, as he was evidently very embarrassed to have only cake for lunch) for lunch.
8. A short time later, Jenn sees Nina coming in from lunch recess with Jon's lunch box and thinks, "That's weird," but doesn't put any additional thought or action into it.
9. Monday afternoon Jenn opens the fridge to prepare her own lunch and finds Nina's lunch.
10. Jenn finds out from Jon and Nina that Nina ate Jon's lunch and Jon had angel food cake. She finds this very funny, but can't figure out how it happened, because no one's stories match the facts.
11. Tuesday morning Jenn goes to help Nina's class at computer lab. Jon walks by and waves. This reminds Nina's teacher of a funny story. Jenn finally finds out the WHOLE STORY.
Jon really is very embarrassed about the whole incident, though I think he's starting to see the humor in the situation. I tried to tell him that most kids would be nothing but jealous to see someone else eating a cake for lunch. I also told him that he could tell his teacher, should something similar to this ever happen again, and I'm sure she would help him. I really do feel bad for him, because he was such a victim in an unfortunate series of events.