Skull Flag

The  is a limited-time decoration that was released on October 3, 2017, as part of the Treehouse of Horror XXVIII Event. It can be obtained by releasing Kearneymon at Kearneymon's Alley.

Trivia

 * It can be placed on grass, pavement, dirt, beach, boardwalk, pier, edge of boardwalk, or edge of pier.