Spirit of Christmas is the name of two different animated short films made by Trey Parker and Matt Stone. They are precursors to the animated series South Park. To differentiate the two, they are often referred to as Jesus vs. Frosty 1992 and Jesus vs. Santa 1995.
Jesus vs. Frosty begins with four boys building a snowman and, in the vein of Frosty the Snowman, putting a magic hat on it to make it come to life. Unfortunately, Frosty turns out to be evil and deranged, sprouting huge tentacles and killing the Kennynamed, Cartmanresembling boy by throwing him. This leads one of the boys to utter the first version of a line which recurs in countless South Park episodes Oh my God Frosty killed KennyThe boys go to Santa for help, but he turns out merely to be Frosty in disguise. This time, he kills the Kennyresembling boy, again by throwing him. The two remaining boys run away, and come across a nativity scene with a baby Jesus, who flies over to the evil snowman and defeats it by slicing off the magic hat with a hurl of his halo. One of the boys says another recurring line from the South Park series You know, I learned something today, and he and his friend realize the purported true meaning of Christmas that is, presents. As a deer nibbles on Kennys corpse they go to their homes to find presents hidden by their parents. ........
Source: Wikipedia