The China trip I went on was a teacher exchange, and the locals put in a huge effort to entertain their guests. We were taken out to dinner by the local school board, and had to be careful not to offend our hosts. They put on a spread including silk worms and grasshoppers which I managed to eat. Their real highlight were sea slugs. These things were repulsive, but had to be eaten to save face. I managed to get mine down but had to excuse myself as I thought I was going to throw up. On returning to the table I was dismayed to see that my fellow teacher sitting next to me had managed to swap plates while I was away, so to save face I had to eat another one.