The hemipenes option is probably the most sensible one, though in general I hadn't put too much thought to the prospect when I originally constructed the setting (as I hadn't really considered a more adult slant to it, at the time). I was more working off of the idea that Aeryn and Reliyian are both quite high lore, so a combined knowledge of anatomy and deductive skills would let either of them figure it out. Eshalu has a significant body of time in the wilderness, and so might at least recognize the difference between a cloacal opening and that which would contain male genitalia.<br/><br/>And no tits on a humanoid species? But then what will you motorboat? Won't you think of the motorboaters? (In seriousness, yes, I recognize and acknowledge the peeve.)