They are emotionally and intellectually retarded at about the age of 14, which explains their deep narcissism and readiness to rebel, scoff, mock, lie, destroy, and pursue vengeance against emotional and intellectual adults.
Intellectual development is arrested when the person starts smoking marijuana. One can tell at about what age one of these perpetual hippies started smoking dope. If they act like 14-year-olds, then that’s the age at which they started smoking marijuana.