Answer:
What can go through glass without breaking it?
What letter comes next: O T T F F S S ?
Each morning I appear to lie at your feet, all day I follow no matter how fast you run. Yet I nearly perish in the midday sun.
Dies half its life. Lives the rest. Dances without music. Breathes without breath.
I do not breathe, but I run and jump. I do not eat, but I swim and stretch. I do not drink, but I sleep and stand. I do not think, but I grow and play. I do not see, but you see me everyday.
I am your mother's brother's only brother in law. Who am I?