I remember reading that when national parks tried to make a ‘bear-proof’ trashcan, they found that there was a larger overlap between the smartest bear and the stupidest human to make a viable product.

I feel like it’s a similar situation here. The smartest kid and the stupidest adult are far more similar than we’d like to admit.

I don’t think there is a “dead giveaway”. Plenty of kids can pass as adults online and plenty of adults seem like kids online. And sometimes with stuff like word usage/grammar/etc you can’t tell if it’s a child or someone who doesn’t speak English very well or maybe an English-speaking adult who happens to type like that. There’s a lot of different people in the world.

Nice try little Timmy, but I won’t be telling you how to pass as an adult.

When they’re adamant that voting third party in the United States will be useful in some capacity, I assume they’re 13

Extreme/insane positions on everything. Not just one or two insane positions, not just political extremism; when I say everything I mean EVERYTHING. No nuance allowed. And it has to be fully sincere, otherwise you are dealing with a Jreg.

There are milder versions of this, but I have rarely met a child that didn’t have a strongly held insane belief formed from their limited experiences. My favorite was a kid who told me that eating pasta supports fascism because it comes from Italy, so loving Italian products means you support Mussolini. Pizza is fine, though, because that’s American.

Very confidently wrong, poor reading comprehension, poor grammar, limited vocabulary, emoji gore, catch phrase/pop culture quotes/talking points repeated with no comprehension of what they’re saying, clearly not aware of how many things in life work, religious regurgitation while being surprised everyone doesn’t agree with them. Very easily impressed with basic factual statements, clearly thinking confidence is the main thing that makes someone correct. Thinks their mom telling they they are handsome is a valid point. Idk, that’s all I got.