bad!

When I introduced a word "warui", which means "bad", a mama-student of mine was very happy with the word. She had two boys under 10 years old, who were exactly at the "gang age". As soon as she learned it, she said quite correctly that her sons were "WARUI"!!! Yes, she had my sympathy. No matter what country you are from, you have to run after children at that age and tell them off. That is the same to all mothers in the world.