I saw the erky-perky bird
flying through the sky.
I saw the erky-perky bird
had only got one eye.

It did an erky-perky from  
high up in the sky.
But when it circled back again,
I saw its second eye!

The moral of the story's clear:
Do not be misled.
The erky-perky bird has 
eyes both sides its head.