How about being born into a family, going through life and never having anyone tell you who is related to who, how and whatever family secrets that you shouldn’t take about.
Then get to 20 years of age and everyone treats you like an idiot for not knowing that aunt Margaret had a secret affair in 1975 had an illigitiment child who is your best friend, then she got married, divorced had three other children from different men and you always thought that their father died a long ago. No one talks about any of this but you are somehow supposed to know.