This 2009 video shows off a curiously effective Hallowe'en prank: the pranksters dressed a child-sized mannequin in a skeleton costume, then posed it, holding a candy-bag, in front of houses, rang the bell and ran off. The homeowners opened their door to find a silent, staring, motionless, costumed "child" — creepily clever.
Funny Halloween Prank – Fake Trick Or Treater Prank – Trick Or Treat With Timmy
(Thanks, Fipi Lele!)