This is Animaniacs' third Halloween episode. However, it aired on May 3, 1994.
Scare Happy Slappy
Slappy and Skippy, the latter of whom is dressed as Buster Bunny, go trick-or-treating at Slappy's arch-nemeses, Walter Wolf, Sid the Squid, and Beanie the Brain-Dead Bison.
Rita and Runt find themselves in Salem, Massachusetts during the Salem Witch Trials, where Rita is accused of being a witch. All the songs in this cartoon are parodies of songs from the 1991 Disney film Beauty and the Beast.
Dot, Hello Nurse and Slappy act out the witches' scene from Ma—I mean the Scottish Play, while Yakko "translates" the incantation. What they conjure up is...rather scary....FroynLAYven!