Olympics to replace Japanese athlete's gold medal after mayor bites into it
https://edition.cnn.com/2021/08/13/world/japan-mayor-bites-olympian-medal-intl-hnk/index.html
I guess the mayor didn't know the detail of biting a medal. He may have thought that it's common for everyone to bite medals whoever got.
There would be many middle-aged people who assume it's not impolite to bite a medal of someone before this incident.
We should understand there is a huge gap about manners between generations.
