You'll grow into them

Nubbin was pestering me in the car to turn around and look at his toy. Telling him that I was driving and couldn't turn around to look just didn't satisfy him, so I finally told him, 'Nubbin, I see it.' When he questioned how I could see without turning, I quickly replied, 'because I have eyes in the back of my head.'

Nubbin: 'You have back eyes? Do I have back eyes?'
Mommy: 'When you get big like mommy, then you'll have them.'
Nubbin: 'How do I get back eyes?'
Mommy: 'I got them once I had kids.'
Silence from Nubbin...

Later that night, when Husband was putting him to bed, Nubbin asked, 'Do you have back eyes like mommy?' After Husband affirmed that he too had 'back eyes', Nubbin said, 'I want back eyes too, but I'm too young to have kids.'

Now, I know when Nubbin is trying to pull something behind my back because he'll ask if I have my 'back eyes' open.