Snacks has been talking in his sleep for as long as I can remember. I used to run in to his room when he sat up and try to make sense of what he was saying. I'd try to get him to repeat himself; tell me what he needed and try to calm him if he was agitated, which typically didn't work.
Until I finally learned that even though his eyes are open and he's sitting up in bed, he's ASLEEP and not rational. So now I just do the best I can to try to get him to lie back down without engaging him in conversation.
Tonight when he sat up and gestured to me and said, "I need something fat...," I just kissed him, laid him back down and said, "Okay, honey, I'll go right out and get that for you."
And back to sleep he went.