So, there I was, humming "Do-Re-Mi" while doing the dishes, when it hit me - I've always wondered, just how old was Rolf in The Sound of Music? You know, the guy who sang "Sixteen Going on Seventeen" and had a bit of a crush on Liesl. I mean, if they were both "sixteen going on seventeen," then they were practically teenagers, right?

But hold on a sec, let's rewind. The movie's set in 1938, right? And Liesl's supposed to be around 16. So, if Rolf was "sixteen going on seventeen," that would make him... well, 16. But here's where it gets a bit tricky. The actor who played Rolf, Charmian Carr, was actually 21 when the movie was released in 1965. Can you believe it?

Now, I know what you're thinking. "But wait, that doesn't make sense! He looked like a teenager!" And you're right. Charmian was indeed a baby-faced 21-year-old. But here's the thing, back in the day, it wasn't uncommon for actors to play younger roles. Think of Leonardo DiCaprio in Titanic - he was 22 playing a 17-year-old.

But let's not forget, The Sound of Music was based on a true story. The real-life Rolf, also known as Kurt, was indeed a teenager when he met the real Liesl, or rather, Maria. So, in a way, Charmian was actually playing a younger version of the real Rolf. Mind. Blown.

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Now, you might be wondering, why does this even matter? Well, it doesn't, really. It's just one of those random things that pop into your head while you're doing the dishes. But hey, now you know! And who knows, maybe the next time you're singing "Sixteen Going on Seventeen," you'll think of Charmian Carr and smile.

And while we're on the topic, have you ever wondered about the ages of the other Von Trapp children? But that, dear reader, is a story for another time. Until then, keep questioning, keep wondering, and keep humming those tunes!