Answer:
What word has kst in the middle, in the beginning, and at the end?
Do what he says and you'll be fine, don't and you lose the game.
I am free for the taking. Through all of your life, though given but once at birth. I am less than nothing in weight, but will fell the strongest of you if held.
What do you have when you're sitting down that you don't have when you're standing up?
What has four legs during the day; and six or eight during the night?
What covers its face with its hands, speaks no language, yet most known what it's saying?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?