Lonesome Ghosts

Lonesome Ghosts was released in 1937.

Summary
Four ghosts, bored with having nobody around to scare, decide to look in the phonebook and call some ghost exterminators to mess around with. Mickey Mouse, Donald Duck and Goofy arrive, are subject to the ghosts various pranks and eventually frighten them off when they crash into a mixture of flour and molasses that makes them look like an even more frightening trio of ghosts.

Legacy
The Lonesome Ghosts were originally planned to have been included as part of The Haunted Mansion alongside other Disney ghosts. The Lonesome Ghosts characters themselves would appear in House of Mouse and levels based on the short appeared in Mickey Mania and Epic Mickey.

Goofy's line "I ain't afraid of no ghosts" would later be used in the Ghostbusters movies.