Is it normal to be intelligent and stupidly clumsy at the same time?

I mean, I'm good at getting good grades and I'm not stupid as far as I know.

But my friends keep wondering how I'm so good at school if I'm stupid enough to trip on a flat surface. Seriously, it's not even funny.

One time I was sitting at home, doing homework (once upon a year) and thinking and the next moment the world is tilting sideways. At first I thought it was sleep deprivation, but then I realized I forgot to breathe. FORGOT. TO. BREATHE. Does that even happen to people?

Also, I'm a little tense when listening to music in class now because I might just start singing along and not notice people staring.

I also spill stuff a lot, I don't know how it happens. I'm standing there, talking to my friend with a cup of tea in my hands, and then I swing it and apparently all the stuff spills out of it and i don't notice. Seriously. My friend's standing there staring like I killed a bear and I keep on talking. Sometimes it's dangerous too. One time I missed the cup and poured scalding hot water on my hand. Am I a threat to myself?

I've also made a fool out of myself at school when I tell the teacher the answer and the class asks to repeat and I repeat the wrong thing, like the number of the page. (it was english and it was required, okay?) But the answer was pretty intelligently composed, which is why i had to repeat it. or so the teacher said.