Once while in Mexico I accidentally ate chicken intestines. None of my friends knew what the word tripas meant, and they gave us a place of slightly crunchy, stretchy things. They really weren't bad, just kind of chewy.
Later we got back to family we were staying with and asked the english speaking father what tripas meant, and he said chicken intestines. EW!
I also had spiced stewed prunes, various goat products, and cactus juice while there. And something made me really sick. Really, really sick.
The next time I went to Mexico I was very careful about what I ate and I didn't get sick, thankfully.
I also once ate sweetbreads on a cruise not knowing what they were until the waiter later explained. They were delicious!
I've also eaten fried squirrel, rabbit, deer, lamb, etc. Calamari is good fried!
We have a restaurant here that serves lamb fries, my parents think they are delicious but I can never bring myself to chew them up and swallow...