Spike is in the middle of raising an eyebrow at the cocoa when she throws him off guard with that question. It's not that he was trying to get on her nerves, but he wasn't expecting an insightful reply. Is he actually dreaming? It's a little spooky how she asks the same questions that usually run through his mind at this time of night.

"Any day now." He means it to sound like a joke, but it's too dark for his usual humor. "We're about due, aren't we?"