When I was young, I bought a prepackaged slice of cheesecake from a convenience store. When I bit into it, there was a big cockroach waiting for me in the next bite. I took it back and got my money back, and never bought it again.
Not that unusual, but once I opened a can of tuna and started to make a salad with it, and there was a HUGE bone in it, I mean big...enough to choke a horse. I notified the company, luckily none of us got that thing stuck in our throats.
Back in the day, when I was ignorant about cheap quality dog foods, I was feeding my dogs the cheap Ol' Roy canned food from Walmart. On more than one occasion, it smelled foul, and I found a lot of gray fur mixed in with the food, looked like bits of dead rats. Silly me, I thought they ground up all their euthanizes pets, roadkill, and diseased animals pretty well...seems like they got lazy.