On this day in 1987, The Real Ghostbusters episode “Once Upon a Slime” first aired! 👻🚫 In this adventure, not wanting to return his favorite fairy-tale book to the library, Slimer hides it in Egon’s latest invention and accidentally turns it on. The next day, the fairy tales have come to life, and the fantastical beings learn that Egon’s machine was designed to turn ethereal entities into solid matter! #ghostbusters #therealghostbusters #cartoon #animated #onthisday