She answered my ad for a pen-pal in casual encounters cautiously…just a one-line answer, but it sounded real, the grammar was correct, and so I gave it a shot. Within a few intelligent-sounding e-mails, she confessed she was a lesbian in a serious relationship with a recent, new-found obsession with cock. I of course assumed she was fake, and immediately stated so, giving a legitimate explanation of the usual fakes I deal with on craigslist. I asked for voice verification. I got it. She was real. She went into detail about what she saw as a completely primal, instinctive, biological obsession she was having with cock. Perhaps it was her complete lack of experience with it, mixed with her biological desire to use her parts in ways they are biologically supposed to be used, which spurred this extreme curiosity on. Whatever it was, I was happy to oblige discussing fantasies with someone so eager to be led into a new-to-them world.