Answer:
I am pronounced as one letter written with three. I come in blue black brown or grey. Reverse me and I read the same either way.
I wiggle and cannot see; sometimes underground and sometimes on a tree. I really don't want to be on a hook and I become a person when combined with “book”.
I am sometimes referred to as chips
Find me on body builders or in the drink aisle. What am I?
What goes up and down, but does not move?
Both old people and owls are said to be possessing this trait