After a good night of Trick or Treating, you and the people you went out with are left with giant piles of candy, consisting of treats you love and hate.  The only logical thing to do is having a candy trade off, which is explained in the following video.

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Man, I can remember getting hosed in candy trades with my older brother.  And actually they weren't even really candy trades, just him punching me until I gave him the candy that he wanted.  Too bad I didn't see this video in my youth.

Source: Fark