lmao so second story; was old enough to be accepted in a job but not grow pubes???????

Hopefully a mistranslation

It is a common, mild insult from an older person to someone younger. Let's say I am 50 and you are 25. Even though you are obviously old enough to have grown pubic hair, I might say this to someone your age if they are pretending to be older or wiser than they actually are. For instance, an 18 or 20 year old giving advice about love. "You're not old enough to grow pubic hair, let alone know enough about love to give advice on it.", might be someone's response who is my age. It is a particularly common, mild insult in many parts of the world, including Japan.