A person's youth can fly by way too quickly, and there are certain times when they'll be hit with the reality that they're all grown up.
I want to know what experiences resulted in you recognizing that you're no longer young.
Maybe you were a teen when Titanic came out, and you rewatched it recently and were shocked to discover it's been over 25 years since it was released.
Perhaps you overheard a kid use a slang word like "cheugy," and you had to turn to Google to figure out its meaning, which confirmed the fact that your youth is behind you.
Or it might be that you tried on some new jeans and looked in the mirror to see how they fit. Suddenly, you noticed how over the years your fashion sense has become a little less trendy than it once was.
Tell me about the moment that made you realize you're officially old, and your response could be included in a future BuzzFeed Community post.