[Jack arches an eyebrow, letting Spike hold him down, for now, panting with exertion.] Oh yeah? Your own personal punchbag, guaranteed not to leave any marks, regenerate if you accidentally kill him…
[Damn it, he probably shouldn’t let that sound quite so attractive. Though he does still have some bargaining power.]
Might ask for something back in return of course. [A smirk that should leave Spike in no doubt as to what he’s suggesting.]