It's the poop.

"Yook mama, it's poop!" says an excited Little Dog.
He's been obsessed with potty talk lately, so I glance up from my laptop to remind him that it isn't nice to call things poop. Well, unless it is poop. And in this case that is just what my darling toddler had smeared on his finger he was excitedly extending in my direction.
Sometimes even a toddler can be that literal.