It's Halloween, which also happens to be Santa's 75th birthday. Candy is the master of ceremonies for Santa's birthday party, and she takes advantage of the situation to "roast" her rivals for the position of Santa's Successor. Her "quips" pretty much tank everyone else's chances of being named Successor. It's actually an interesting character arc as sweet Candy turns vicious in her quest to become the first female Santa Claus.
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