Answer:
White and thin, red within, with a nail at the end. What is it?
What can be any size or shape and gets bigger the more you take from it?
They are toothy nocturnal immortals.
You can't keep this until you have given it. What is it?
It is a common and favored clothing material among biker gangs and superheroes.
Lynn likes grapes but not potatoes. She likes squash but not lettuce, and she likes peas but not onions. Following the same rule, will she like pumpkins or apples?