Any quote from LOTR is allowed. Any movie/book, any character, any place.
For example:
"Nobody Tosses a Dwarf!"
You answer the character who said it, what book/movie, and where they were when they said it.
I would say: Gimli, TFOTR, Moria
You can use abbreviations for the movies.
TFOTR=The Fellowship of the Ring
TTT=The Two Towers
TROTK=The Return of the King