You have a immature heart, your 'not showing' politeness leaves people with a question mark. You have a good sense of attention towards people, but lack to respond.
Congrats! your a cool nerd! you that person that gets honor roll every year! and is always worrying about school...kind of like a teachers pet sometimes. You are also friendly and cool, but remember don't let that nerdyness get to you, or people will think your wierd