Best short riddles

What man cannot live inside a house?

Never trust this fellow’s grin. His teeth are sharp and course, his blood’s as cold as icicles, and he’ll show no remorse! What is it?

I am as big as you are, but I am weightless. Who am I?

What do you get when you drop a pumpkin?

This very thing you were born with pleases us all. It's even capable of making men fall, while only experienced by few it's treasured by all.

A mirror for the famous, but informative to all. I'll show you the world, but it may be a bit small. What am I?

What bird can write?

What kind of dog has a bark but no bite?

What body part is pronounced as one letter but written with three, only two different letters are used?

A girl was ten on her last birthday, and will be twelve on her next birthday. How is this possible?