Food has an expiration date for a reason

So my hubby and I were emptying out our storage unit last month when I came across this bag of chips; my husband aka 'Mikey' opened up the bag and started eating them. All of a sudden a strange Stale smell came across my nose and I started to become suspicious. I looked over at my husband who had the strangest look on his face and I asked him for the bag. At that moment I just about crapped! The expiration date said August 29, 2003 (one day before we got married)! My god! I thought he was going to throw-up. He was trying all sorts of things to get the unforgiving taste out of his mouth...all I could do at this point was laugh my ass off. Maybe next time he puts something in his mouth he will check to see if it is safe to digest.