"A drop bear (or dropbear) is a fictitious[1] Australian marsupial. Drop bears are commonly said to be unusually large, vicious, carnivorous koalas that inhabit treetops and attack their prey by dropping onto their heads from above.[2]

They are an example of local lore intended to frighten and confuse outsiders and amuse locals, similar to the jackalope, hoop snake, wild haggis or a snipe hunt.

It is often suggested that doing ridiculous things like having forks in the hair or Vegemite or toothpaste spread behind the ears will deter the creatures.[3]

Another suggestion is to walk through the bush carrying a screwdriver raised above one's head in the hope of impaling the attacking drop bear." Wikipedia
 

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