Oh Holy Hell

Someone... please explain this to me...

I'm not in the habit of leaving Jack unattended for more than a few minutes. Today, I was desperate... I needed to do something work-related. I needed my old laptop (a PC), my new laptop (an Apple), my cell phone, and both hands free. That means, I needed the dining room table.

Jack was happy and playful, so when he woke up from his morning nap, I put him on his exercise mat. I lined him up so that he could see himself in the mirror, like I always do. He was pretty psyched about the whole arrangement. Here's where I put him:

His mat is in one room, and the dining room table is in the other room. So I sat down at the table and kept an open ear. I could hear him happily cooing and playing along. Then, he started giving a few short yells, like "mom! come see!".

So I went. And this is what I saw:

This is what he did:

I would swear someone walked in and repositioned him, except that I was sitting by the only entrance to the house. And the dogs are not home today. How, how, how did this happen? Did he roll? Did he scoot? Did he grab a ring and pull? The mat material is very slippery and the rug is rough -- was this a weird issue of competing friction and kicking feet? Last night, Jack arched his back in a way that he could have fallen out of my hands. I am still feeling horrendous about that, and now this. I swear I'm not letting this kid out of sight until he's 18.

Seriously. Jack, you are officially increasing in mobility and I'm freaking out!