I pointed to a picture on my phone and asked "Who is that Sethy?"
To which he promptly and enthusiastically responded, "You!"
"That's me?" (I am wondering if he was being silly.)
"OHH, that's you!"
"Yeah, YOU!" (DUH, MOMMY! is what I am sure is going through his head.)
Suffice to say we have not worked on pronouns with the little one yet.