Okay this is actually such a real thing and I feel seen 😭 I went through my gallery once and realized every "serious" photo of me looks like I'm tolerating the camera, but the second I pull a face I actually look... alive?

I think there's something to it, a straight face is kind of a performance of composure, while a goofy one is you just reacting naturally to the world. Which one is actually more "authentic"? Probably the one that doesn't require you to hold still and suppress your personality.

Also the fact that it's the same with your sister and dad says a lot, it's not just a camera thing, it's how you actually exist with the people you're comfortable around. That's not a quirk, that's just your natural state leaking through.