Katherine watched the adorable pair make out and stroke each other, their teenage bodies glistening with sweat and cum. Scarlet was still hard of course (the girl had a libido like nobody's business) and Emily apparently was getting excited again too. Hell, her own member was hard again as well, precum leaking from the tip once more in large drops that rolled down the already slick shaft.<br/><br/><em>"That was great mum. I really liked it. Hopefully now we have done it once we can do it more often. Is that OK? I mean I suppose it is a little odd, but at least we all know each other. If we are going to explore we might as well do it with each other right?"</em><br/><br/>"Mmm, of course baby," Katherine replied smoothly. "In fact I'd rather you do it with me or each other, since it's obviously safer that way. But in the future we'll need to see about getting you both some new partners and some wider experiences."<br/><br/>She hadn't intended it, but the words 'wider experiences' suddenly gave her an incredibly naughty thought that made her cock twitch. Ooh, that was so naughty! Purring sexily, Katherine came closer to her two sweet hearts and stroked their legs. "Speaking of which, I think it's time you both learned about one of the most controversial, yet pleasurable forms of sex." Her eyes twinkled with mischief as she saw Scarlet's eyes light up with curiosity and she seemed to be holding her breath in anticipation.<br/><br/>"I think I'll teach you the basics of anal," Katherine finished, and Scarlet let out a happy moan.<br/><br/>"Oh fuck Mom, I've always wanted to try that!" Scarlet sighed, her hand stroking Emily's shaft faster.<br/><br/>"Well I doubt either of you are ready to actually try full anal sex. We'll just start with some basic fingering today though, alright? Now Scarlet, I want you to begin fucking Emily and leave the rest up to me."<br/>++++++++++++++++++++++++++++++++++++++++++++++<br/><br/>Scarlet was only too happy to comply. Anal sex! She'd always, always wanted to try it, but she'd always been to scared too actually explore that option. So, without even asking Emily's permission or thinking twice about it, she pushed her rock hard cock into Emily's tight pussy. Her cock and Emily's pussy were both still totally slick, so her ebony shaft slid in without a single problem. Leaning down, she began sucking and licking Emily's teenage tits as she moaned in delight.<br/><br/>"Oh Em, you're a bit tighter than Mom, that's for sure," she panted in between licks and caresses. Her thrusts were slow and sensual, almost more of a rolling motion. Suddenly, she felt something wet touch her virgin asshole and her back arched.<br/><br/>"Now, now Scarlet, it's only a finger," Katherine said reassuringly, her wet finger going in little circles over Scarlet's back door. Her other index finger was gently caressing Emily's pink pucker, spreading saliva all over it. Then, with one motion, she pushed one finger into each daughter's asshole.<br/><br/>"OH FUCK!" Scarlet cried, shoving herself deeply into Emily.