There's a deep vibration far above me. Almost a growl of satisfaction. I nearly lose my grip at the sharp crack outside. Sounds like a whip, and the h...gh pitched 'O' in the distance grows louder, turning to a sustained moan, an imploring, desperate, needy quality to it. It's arousing beyond compare. Nothing like the far gentler previous time.The CRACK is repeated, over and over, each one jarring and making me shiver. Arousal grows, swells as more electricity arcs into the soup and I clutch. Tavistock raised an eyebrow, questioning her. ‘As of late, Doctor, I’ve found I’ve been very frustrated with just about everything, and I know not the cause of this. My moods too, have been irregular. One moment I can be choleric and angry, and the next, indescribably jubilant. I’ve started biting my fingernails,’ she said. To prove her point, she held up her hands, where indeed, the Doctor saw that the nails had been nibbled at and were ragged looking. If she continued this, there was no doubt. On one occasion, she began to give me a hand-job, but the sound of parents walking up the stairs ended that swiftly. I still remember her gorgeous eyes smiling up into mine as she fumbled with my balls. On the next few occasions we matured more emotionally and we became less sexual with each other, just holding hands and kissing. We stopped altogether at 15 and saw each other less and less, and for shorter periods of time. That didn't stop me from fantasising about her though, her sweet mouth. "I get turned on by thinking of you fucking a big black dick." "Why? " she asked. "I don't know, I like the idea of seeing your pussy stretched and I really like the contrast in color." "Oh" she said. I have an average sized dick, about 6 inches, but I have been told that I know how to work it so I have no size problems. Whenever we use the dildo Deanna goes crazy, she cums all over it and has incredible orgasms. I didn't mention my fantasy again since she was so quick to turn it down the last.