plural of one-hundred-year storm

I was born ... year(s) ago.

Indicates that the speaker is aged twenty.

A century egg (Chinese egg dish)

(idiomatic, anime and manga fandom slang) To be so immature and unprepared as to have no hope of achieving an accomplishment.

plural of thousand-year-old egg

Particularly wise for one's age group; wiser than most others of one's age.

I am going to recreate/reinvent myself for the new year

plural of disability-adjusted life year

(medicine) A measure of overall disease burden, expressed as the number of years lost due to ill-health, disability or early death.