As soon as Vivian spotted Erica pouting, she broke out in a most wicked grin. She replied humorously:
"So sorry Erica for not sharing. But I do think I was entitled to some reward for putting up with the two of you peeing on me. Besides I'm certain that you have had more than your share of Matt's cum to enjoy in the past."
To which Erica retorted, "Mabbe so! But one can never tire of slurping some good tasting cum. You still would have had just as much enjoyment if you had saved some for me. As it is you might have tuckered Matt out so much that my share of the fun might not occur until I've lost the mood."
Erica was not truly annoyed as her demeanor would seem to indicate. Instead, she was taken aback at how venturesome her sister had become so soon after surrendering her virginity. On the other hand she was pleased with Vivian's insouciance in sexual activity as it so mirrored her own outlook. She could already picture in her mind that hereafter she and Vivian would probably make a great female team in future threesomes and foursomes or even in an orgy. It was her most secret desire to participate in an orgy and to accomplish it before settling down and getting married.
Unfortunately the males she had encountered were of a conservative bent who would be shocked if they were to discern the full scope of her licentious temperament. She could sense none of them would agree to an MMF threesome. She imagined most of her male peers would not object to participating in a gangbang of a single willing female so long as none of them had a special regard for the said female. The best she could hope for in an intimate tryst was the FFM threesome like this afternoon's frolics. Even at that she knew enough to be circumspect in dealing with Matthew to bring about this threesome. That is why she didn't advise him in advance so that he had no real opportunity to balk from participating.
Although Matthew might have refused to have participated in the threesome had he been forewarned, at this juncture he was totally ensconced in sexual euphoria. What both Erica and Vivian were willing to do and did do astonished him. Their lewdness went far beyond his imagination of realistic exotic sexual fantasy. Sensing a challenge in Erica's remark, he replied:
"Oh don't fret my dear Erica! I may be a little exhausted at this point, but I'm sure I'll be ready for you again very soon. And in the meantime, I'm sure your sister and I can sustain you in the mood."
With that Matt turned around and knelt down to kiss Erica fully in the mouth unmindful that her tongue had just been engaged in thoroughly playing with his ass hole. Shortly thereafter he reached underneath to pick her up and transport her to the blanket. Erica like her sister was not a dainty woman, but as a farmer's son, he was used to heavy lifting chores. Thus, carrying his girlfriend presented no problem to Matt; as far as he could feel she seemed light as a feather. He laid her down and then lowered himself to commence eating her out.
Not to be left out of the fun, Vivian strolled over to Erica and hovered over her face. Erica raised her arms straight up in the air to allow Vivian to lower her knees to the ground and straddle her head. Thus, Erica's arms were above Vivian's calves to allow her fingers to touch and poke at Vivian's vulva and anus at will. Of course, Erica's tongue was not idle either so that the effect was that both Vivian's pussy and her rosebud opening were mutually and continuously stimulated. For her part Vivian bent down to fondle both of Erica's ample breasts. She massaged, pinched and manipulated both nipples to rock hard stiffness.
The damp and drying urine clinging to Vivian's body gave out a pungent and off-putting odor. However, in conjunction with her natural female scent of her vagina, the smell of Vivian was totally intoxicating to Erica's senses. Her libido was heightened, and she became extremely lightheaded as she was being mutually aroused by her sister and her boyfriend.
Meanwhile Matthew's penis was becoming big again; an almost automatic common reaction whenever he indulged in cunnilingus. There was something about eating pussy that just animated his passion. Even if he was not in a particular horny mood then a few licks of female essence would always do the trick to make him ready. Thus, despite the most recent blow job administered by Vivian, he stopped his muff dive and got to his knees sporting an adequate erection. As he advanced towards Erica's head Vivian backed away.
Seeing Matt's now very erect penis, Erica's eyes bulged in disbelief that he could become so randy in such a short interval. As soon as his cock reached near her chin, she lunged her head forward to swallow it. Having already arrived at an immanent orgasm, his cock in her mouth set her off and she began leaking her female juices. The ever watchful Vivian quick to note her sister's state, immediately moved behind the straddling Matt to slurp up her sister's expelling fluids. Matt was then spurting his semen deep into Erica's throat; she was in sexual bliss as a result.
The three of them disengaged from each other to enjoy their own personal after glow. They took the opportunity to feast on some more of Erica's picnic provisions which replenished their sexual urges which now had become mutually insatiable. It was at this moment that Vivian, though the newcomer to sex, nevertheless, took charge and declared:
"This has been fun as I've had the pleasure of having Matt's cock in my pussy as well as in my mouth. However, I'm well aware that there is another hole in my body which can receive Matt's magnificent manhood. Yes! I mean I want it up my ass! And I want it now!"
Erica gasped and protested:
"But wait Vivian! Surely you are aware that your rectum does not naturally lubricate like your vagina does. The raw friction between his cock and the inners of your ass will cause lots of pain perhaps worse than the spanking. And that's not even considering that his big prick will likely destroy your small ass hole. And furthermore, I did not bring some KY jelly which would help alleviate the gaping of your ass."
Undeterred, Vivian replied:
"Pish posh Erica. I'm no wuss! Besides I see that you have some extra butter in your picnic basket. That should work just as well as the jelly if we butter up Matt's prick and my ass hole."
"OK then! You asked for it Vivian. Matt I'm sure you have no objection to taking my sister's chocolate cherry."