They say when you meet somebody that looks just like you, you die.

My doppelganger wraps the ear in a handkerchief and shoves it into his pocket as he leaves the train with a nod of his head in my direction.”William Wilson in the short story 'Metro' by Steen Langstrup

When I was a kid I worried that when I woke up, I'd find my family having breakfast with my doppelgänger. We would fight to the death, and then my family would peacefully finish breakfast.

If natural selection can create creationists it can manage a caterpillar with a face on its arse.