This is a terribly silly Cid and Vincent doujinshi. In this one Vincent tells Cid that he's pregnant, then tells him that a Chocobo egg is his baby. OKAY VIN, SURE. Cid takes good care of it, but then Vincent can't hide it anymore and tells him that he was lying. It's really funny and cute, altho a little racy at a few points.
As usual, any help with translation is appreciated. And mucho thanks ta Soshi fer scannin this. You can download a zip of the scans here.