Answer:
As soft as silk, as white as milk, as bitter as gall, a thick green wall, and a green coat covers me all.
Only two backbones and thousands of ribs.
Different lights do make me strange, thus into different sizes I will change.
When the day after tomorrow is yesterday. Today will be as far from Wednesday. As today was from Wednesday. When the day before yesterday was tomorrow. What is the day after this day?
As round as an apple. As deep as a cup. All the king's horses can't pull it up.
Sugar on a stick. The kids love licking them