No. It's fine. Spike's seen it, s'only fair I show you. Actually, we kin step out back quick, if you want? An' honestly it's more refreshin' when people git curious.
[Considering the more common response of being confused and mildly disgusted, thinking he's a freak or getting hung up on the fact he's not human like they originally thought.]
I'm beginning t'think the blood thing is only a thing from my world.