Late 70s early 80s horror movie
I saw a movie as child many years ago that I loved and I am trying to figure out the name of it. I recall a misfit or possible fat kid being called over by cheerleaders only to have his pants yanked down and hung on a flag pole. He continues to be bullied in the movie. He is in a library and discovers an old book (I believe it is written by a guy in a painting in the library). He gets into the book which has spells in it. Later in the movie he goes to the chapel gets holy water from it and casts a whopper of a spell. Pigs are running through the chapel and I believe he gets his revenge on his tormentors. I am unsure as to if he becomes possessed by the guy in the painting or if he resurrects him. That is about all that I can remember but the pigs in the chapel scene is very vivid and I do not think it has been done elsewhere. Thanks!
