Heh, nothing better then american MRE's when you're out for a bit of fun, they simply are exciting to open up and explore at lunch!
i've taken them airsofting a few times and its a riot to crack open the strange brown packets to discover pound cakes, cookies (oatmeal were amazing) tootsie rolls and M&M's not to mention the crazy main meals. jalapino cheese is fantastic the strange bread they have in there can possibly be used for a bullet proof vest mind.
i'll never forget the milkshakes. just powder you add water too, absolutely cracking stuff. the drink powders work well too, if you save two of the same its perfect for your US (1 quart) canteen when full.