Oh, believe me, I have MANY stories about me getting other people's hair in my food while eating out, but I'd be going on for too long, so I'll tell one instance. I seem to have bad luck with that, even at home sometimes.
Me and my mother went out for lunch once at this little restaurant in town... naturally, it was busy. We did wait for around 45 minutes for our food (we got our drinks at least, of course), but the thing is... other people were started to get served who had come after us. I believe my mom consulted our waiter or the manager, and I think they had forgotten our food (that's happened many times, though not as many, before too...).
So, a little while later, but not too much later, our waitress brought out our food. I forgot what my mother had ordered, but I had gotten a meatball sub (well, it was more like a sandwich with the kind of bread they used). It's important that I note our waitress was blonde, as she was the only blonde person working there that we could see, heck, maybe even in the whole restaurant almost. Mom jokingly told me to make sure there's no hair, so I lifted up the piece of bread on top and poked around in the sauce with my fork... and I pulled out a long blonde hair with it.
We told the manager (she was walking around the place anyway... actually she took it from me, the hair XD), she apologized for everything, but we left because of the bad service. I believe ma paid for the drinks though. And because of that, we just got a meatball sub at a nearby Wegmans, mmm.