A few minutes later he sat on the potty, unprompted, and pooped.
He came running out saying "I pooped in the potty!!"
So we run in there and see a huge log in the plastic potty. Cheers, high fives, all around.
Then, Evan decided to give us a descriptive version of his work:
"It's a big hot dog poop! (It did kinda look like a hot dog.) It's big and brown. Hey that's my favorite color! I like brown. Big, brown, hot dog poop!"