Duppy bat

Sense 1:

The Erebid moth (Ascalapha odorata) which is also known as Black Witch, Sorrow moth, and Mourning moth, is called Duppy Bat in Jamaica.
Origin : circa 18th century. From bvb dupe or Akan adɔpe; a ghost or spirit.

The bat is believed to be the spirit of a deceased person in the manifestation of a bat. It is usually not at rest and has returned as a harbinger or to live in its abode among its old family and friends.

Sense 2: a silly person; an idiot

Nuff duppy bats live in the abandoned house.

Last night a duppy bat flew inside the house. The entire place was turned upside down.

Cho! A duppy bat, that. (That is a duppy bat) sense 2.