CREATE OR REPLACE FUNCTION remove_words(message text) RETURNS SETOF text AS $$
	BEGIN
		RETURN QUERY select * from regexp_split_to_table(message, E'\\s+') except select boring_words.word from boring_words where boring_words.word = ANY(regexp_split_to_array(message, E'\\s+'));
  END;
$$ LANGUAGE plpgsql;