I once took a boat trip to the beautiful Misty Fjords in Alaska. We decided that instead of landing on shore to cook, we'd eat the MRE's that were stashed on the boat. They were just shy of their expiration date.

The main course and dessert were okay, but the "potatoes au gratin" side dish was horrible... the yellow cheeze was somewhere between grainy and lumpy, and the potatoes were tasteless. We added the pepper flakes that came with the meal, but they didn't help.

Oh, and when I was a teenager I went on a 2-night trip with my dad to explore an old airliner wreckage in the mountains near my home. He found TREASURE - a bent propeller blade that he had to take home. It was huge. It was also heavy enough that it slowed us down, and we ended up taking half a day too long to finish the hike. We were hungry, and the only food left was a jar of peanut butter. It didn't taste bad, but it's hard to choke it down by itself.