Conversation with a Two Year Old

One might think that just because Marcus's language is limited to less than 200 words and what he does have to say comes out in one or two word combinations, that there really wouldn't be too much that he could communicate. However, I had this whole conversation with him today.

Marcus: Potty.
Me: You have to go potty?
Marcus: No. Potty.
Me: You already went potty?
Marcus: [points to the back of his pants] Potty.
Me: Did you go potty in your pants?
Marcus: No. Cracker.

Hey, I never said what we talk about makes any sense!