It went in with ease but it added another dimension of feeling a more fulfilled feeling, only experienced with double penetration, and reaching behind... to feel what it was causing these new sensations, I felt his two fingered buried deep into my bum as he fucked me, so I returned to servicing my clitoris, just as he seeded me, the warmth spreading from my pussy deep inside, as each spasmodic spurt of semen hit a different part of my inner vagina.My reward was to have my first female doubler,. As soon as Billy had pulled his cock out of her and rolled onto his back, she bent over him and began to cover his face and neck with kisses. He was amazed."Oh, darling, darling Billy!" Kathy exclaimed as her mouth darted from place to place. "You were wonderful! It was so good!" "You really liked it, huh?" he said, proud of himself, but still mystified by the suddenness of his sister's change of heart."Ooohhh, yesss! I want to do it same more! Oh, Billy!" she kept kissing him.Now she grabbed. Collapsing on a rock overlooking the school I could see all the students lined up waiting and the teachers patrolling with flash lights looking for stragglers but luckily I was too far up the mountain for anyone to possibly notice. Sitting on the rock and the tulle of my dress rubbing against my pussy I began to rub my hips against a ridge of the rock, pausing periodically to listen hopping no one would find me. Nervously I began to moan getting caught up in the moment as pulses of heat flowed. Jeesh, the way they acted you would think I had died and came back to life or something. I walked back into Mark's office and he and Shorty were laughing, so I flipped them the bird before I sat back down by the phone. They were laughing their asses off at my actions. I was still pissed, but the headache had eased off. I took a pill and got on the phone, hearing Mark tell Shorty to listen to this because he was about to hear a master of ass chewing at work. I flipped them the bird again while.