In a few places in Cambodia, Vietnam and China it’s rude to tell someone their newborn baby is pretty, smart, or to give it any compliment at all. Instead people would love for you to say things like “Your baby is ugly and has a dog face”, “is that a monkey?”, “what an evil looking baby”, and even “your baby is stupid”.
Some people say these terrible things because they believe that if you say too many good things about the baby, that it will get sick, others believe that what you are saying now reflects the child’s last life, and that if they were ugly, stupid, mean or bad in some way in their past life, then this life must be better. It is strange, yet fun to tell a family that their baby is ugly, and then have them give you a wide smile for your insult which is really a complement.
In some villages the age limit increases. In the cities newborns get the most insults. In villages I’ve seen visitors to the family greet young children with outrageous insults. The children just smiled back while their parents chuckle.
Be careful, not everyone believes this and might be offended if you insult their child.