a little out of context but my favorite Mexican place is La Pinata in Hayward. Hella good food, hella cheap, open late. It's awesome.. but anyway, I've eatin there so many times that I was bound to get something in my food at some point. So the top things that I've found in my food at La P are:
1. A bolt. [yeah a bolt, from the pot where they cook the soup. apparently the bolt fell off from the pot and fell into the rice]
2. A piece of a scouring pad [you know the wire mesh ones used for cleaning.]
Both times this happened the guys were like "Oops... you want a new one? Careful plate is hot!" and they even showed me the pot where the bolt fell off..which was nice...
Forgot to add: I still eat there...its awesome..