LOCUST POINT-Senator Klein joined in the fun at the Locust Point Civic Association where he gobbled candy corn with goblins, fell under the spell of wicked witches, andperformed a trick or two for the well costumed community.Klein has been Halloween party hopping all week long toward the big Throggs Neck Halloween Parade on Saturday, which he sponsors with Congressman Crowley, Assemblyman Benedetto, and Councilman Vacca at the Villa Barone.