a.) Be a decent human being and hand out candy to all the precious little kiddies, or
b.) Just sit on my sofa and every time I get a knock at the door yell, "Thelma doesn't like visitors", or
c.) Answer the door (sans candy) and explain to the little heathens that Halloween is a holiday straight from the anus of Satan and that I'll bet when they're burning to crispies in the pit of hell they won't think their little costumes are so cute then, and the fact that the people next door hand out full-size candy bars just won't really matter. Because in hell your candy will melt. And I would finish with a deliciously evil cackle and then poke them in the eye just so they'd know I wasn't fooling around.
I'll have to think about it. Tough decision.