Optical illusions. We can't get enough of them.
You may be familiar with the good ol' bunny and duck illusion. The ears of the bunny double as the beak of the duck:
Now there's a real-life version with an Australian twist that has gotten people talking: a pic of a kookaburra that looks to some people like a rabbit. Check it out:
Some people were team rabbit.
But interestingly, many Aussie viewers could only see the kookaburra.
And thus, the kookabunny was born.
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