not know you're born
not know (one) is born
To be unaware of or blind to one's own good fortune or ease of life. Kids these days don't know they're born, being able to do everything with a tap of their phones. Families in this country complain about their life, and then they sit down to watch TV in a warm house after a decent meal. I tell you, some people don't know they're born.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
not know you’re ˈborn(British English, spoken) not realize how easy your life or situation is compared to other people’s: Young people today don’t know they’re born. Life was much harder when I was a child.
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