What never asks questions but always gets answers?

Long legs, Short thighs, Bald head And bullet eyes.

Come up and let us go; Go down and here we stay.

Eight were standing, Two were cracking, Two were looking.

What is the center of gravity?

Which is faster,heat or cold?

When Columbus discovered America,where did he stand?

My second is performed by my first ,And, it is thought,A thief by the marks of my whole,Might be caught.

What word of only three syllables contains twenty-six letters?

Its belly is linen, Its neck velvet, Its mouth music, Its tail a fork.