Lard Lad Donut

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

Trivia

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