Sheila turned on me."You swine! Julie left you two in Cardiff so that you had time to do some catching up with poor Vee, and now we find you've been d...odging your responsibilities!"I was taken by surprise by this harsh and unexpected accusation.I was about to hotly explain to Sheila that she was being a tad unfair; and that in fact I had been unavoidably delayed by a backlog of studies, and it was ME being kind enough to send Julie over the night before so that she could enjoy a threesome with. When she had first met her boyfriend, I remember catching them having sex in our bedroom one afternoon, when they thought we had all gone for a family picnic to the beach, and I guess I was shocked then by the sounds of a****l passion that came from our room. She was always very prim and proper. And I had never heard anyone having sex before, and she was crying out: "Oh, fucking give me it!" I'd never heard my sister swear before, and the sounds of their sex got me excited, really excited, for. I felt her contract around it, pullingat it. Vaguely, I heard myself groan. “You can fit more fingers than that in.” She said. “Put in three.” I added two fingers, my middle and ring. She was right, they slid ineasily. I was nearly panting now, unable to believe what was happening, nolonger able to convince myself that this was an innocent anatomy lesson, or areligious lecture. “Move them in and out.” She told me. I did, they made a slurping,squishing sound, the friction very pleasant. . When we get to the spot I have chosen it is a beautiful meadow with soft grass and a beautiful view, I climb off then pick you up, you wrap your legs around my waist and arms around my neck, my dick is pressing against your pussy lips making you want me more, I lay you down under a tree and lie next to you as I kiss you, we work each other’s shirts off and roll around on each other wrestling, I undo your bra and reveal your beautiful tits, I kiss each nipple softly, you start working my pants.