Answer:
I turn around once. What is out will not get in. I turn around again. What is in will not get out.
You seek me out when your hunger's ripe. I sit on four legs and smoke a pipe.
I am enjoyed by some, despised by others. Some take me for granted, some treasure me like a gift. I last forever, unless you break me first. What am I?
I am a word of letters three. Add two and fewer there will be. What word am I?
I go through a door but never go in and never come out.
When is it bad luck to see a black cat?