Answer:
They keep secrets locked away. And you pass through them each day. For each one there is a key, They respond to sesame.
There is one in every corner and two in every room.
What ship has no captain but two mates?
You roll it or you buy it, People say you shouldn't try it, Because you may get a stroke, From inhaling all that smoke.
They come in many varieties: Red, Black, Dead, and Caspian to name a few.
Two little holes in the side of a hill. Just as you come to the cherry-red mill.
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?