Proof of Paternity

If there is ever a question of the paternity of this child, please refer to this picture. While sitting upright, Mark's daughter managed to poop all the way up to her shoulderblades. How is that even possible? I haven't a clue. I only wish I could say that it was the first time she's managed it.

And yes, although it is totally gross, I did take a picture. I didn't think anyone would believe it unless I had photographic proof.