Cub sits in front of his Christmas tree, surrounded by presents, intently watching a toy train move along a circular track. As he laughs and marvels at his toy, a drop of drool slowly drips from his mouth towards the electric track. The drool finally touches the track, causing Cub to get badly electrocuted. He falls facedown on the track, causing the still-moving train to hit and go through his head. The train continues moving, now with Cub's eyes and pieces of his brain sitting in some of the train's cars. (thetvdb.com)