Harmony sires Riley who sires Xander

I read a hilarious Spuffy fic once where part of the background story included Harmony siring Riley, very comedy based. He in turn sires Xander and they are both pretty incompetent in biting and s.exual endeavours with each other and Harmony. It is very funny but I just can't find it. Does anyone else know which it is?

Cornpone and the Bloodsuckers by Always_jbj, Mefiant
Summary: Riley Finn has been having a bad week... will it get better... or simply worse?
Season 5 although we have tweaked the timeline a little, and for the purposes of this fic Joyce is not sick. Contains some mild (tongue in cheek) Slash
Written for Bloodshedbaby in response to a challenge she issued on the BSV tag-board!

Thanks.