His willingness to explain Human Sexuality 101 was limited, and it sounded as though ZEX were still in the dark about quite a lot of things, despite the marks on his neck. "Some can be passed through skin, yes. Others... spit, or seminal fluid... you really should read a book or something about this. And what I mean by your hands is that, for humans, if they don't have a suitable partner, there's, ah, the option of, well, personally taking care of things. Alone." He paused, and almost thoughtfully added, "If you're really unsure about the workings of your new body, it might not be a bad idea anyway. It's a perfectly normal stage in human sexual growth to explore, although like sex in general, usually not spoken of casually with others. Since you've been dropped into your body fully developed and all, you haven't had time to get to know it the way a normal human would."

Then again, in a place like this, where more than half the people he'd met over the last twenty-four hours had not been human, maybe he shouldn't even bother. Perhaps ZEX had the right idea to just look for willing partners who were equally eager to explore what human bodies did together. But... it was just so uncouth. "I certainly don't mean to offend you, your interest is very, ah, flattering. But some people may be off-put by how forward you are."