Answer:
turkey day
I am the only thing that always tells the truth. I show off everything that I see. I come in all shapes and sizes. What am I?
You write on me and secrets I can keep. In places never seen. I spin like a top. Though stiff as a board I'm often described like a mop.
A necessity to some, a treasure to many, I'm best enjoyed among pleasant company. Some like me hot, some like me cold. Some prefer mild, some like me bold. What am I?
I know a word of letters three. Add two and fewer there will be. What is the word?
The answer I give is yes, but what I mean is no. What was the question?