You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For consistency, answers should be in all lower cased letters.

Category: HMM... PRONOUN TROUBLE 
Clue: A sovereign may use the "royal" this pronoun in formal speech; are you not amused?
we

Category: BODY LANGUAGE 
Clue: When vou're idle or just plain bored, you do this with your pollex digits, literally or figuratively
twiddle your thumbs

Category: 3M 
Clue: Meaning huge, but not necessarily woolly

mammoth