I'm looking for a Jack/Will fic I read a while ago that I found very amusing. It started with Jack and Will in Tortuga, I think, and they were drinking in a tavern or something (it doesn't start with an established relationshp between them). Anyway, this guy comes up to the table and basically says he wants Will all to his own self, but Jack says 'no you can't have him, he's mine' and kisses Will, and I think Will reacts like OMGWTF and then they leave. And there's a bit at the end where it turns out Jack made a deal with the guy who came up to the table so he (Jack) would be able to get Will. I have no idea where it's posted.
Also, links to archives which might have this one would be nice.
EDIT: Aha! I found it. Turns out I wasn't looking hard enough. It's
here, if you're interested.