Google said:Actually, your hair does continue to grow after you're dead, but not for very long. We're only talking about a few days here, nothing more. Lots of bodily processes will continue functioning, in some manner, for a few hours or days after death. This is why you often hear stories of dead bodies making noises, or even moving slightly oftentimes scaring any living person nearby to death.
I'm watching The Girl In Question right now.
Fred's parents come to visit, and Illyria takes Fred's form.
They mention how nice the scientists are to "Fred". I'm pretty sure they'd be like "Oh Fred you're alive!" and it would raise question.
I love the banter in the fight scenes. Especially if its between two rivals like Buffy and Spike. The fights wouldn't be the same without the talking. Spike and Buffy were so good at making those scenes entertaining, not just their fists but also with their mouths.