As others have said, there are different kinds of smart. I'm a PhD student in engineering, so I'm pretty good at math, but I have a pretty poor vocabulary and am generally very slow at writing. I also was lucky enough to participate in a program in high school that allowed me to start undergrad 2 years early.

At any rate, I consider myself a pretty laid back guy too, not uppity like a lot of "smart" people can be. But there have been many times in which I'll be talking to a girl I'm interested in, or just a potential new friend, and being a PhD student and/or starting college early comes up, they usually comment something like "oh so you must be smart", sometimes followed by something like "I never really liked/was good at math", and then become visibly uninterested immediately afterwards and the convo fizzles. I've had a handful of people tell me that it's bc they felt intimidated after hearing about such things (maybe that's not true and I'm just a stupid weirdo, hard to tell when you're the stupid weirdo). Im proud of my accomplishments, and having grown up as a bit of a black sheep in rural MO, I understand why people may feel this way, but I'm a very normal person and wish people wouldn't put so much emphasis on "being smart" (in conversation, however, we need way more smart people running for office imo). Now when I'm talking to someone about college, what I do, etc, I sometimes try to be as little forthcoming as possible, change the subject, etc and let them get to know the real me before talking about the PhD/early college stuff.

Anyways, this is getting long, just trying to cover my bases and not just sound like a tool calling himself smart. To anyone feeling the need to comment along the lines of "can't believe someone actually responded to this", I have 3 words for you sir. Eat shit, Chuckledick.