Derek crawled onto the bed and he suddenly felt entirely different, like another side of him took over. Maybe it was little alcohol he had or maybe it was his adrenaline. Whichever it was, he was different. Derek positioned himself between his sister's legs and lightly kissed up her leg getting closer to the panties before stopping and going down the other leg. His eyes looked up at his sister and he smiled. He was nervous but he liked the feeling. "My teeth? What if I bite you?" he asked nervously.<br/><br/>Doing what he was told, Derek kissed back to her crotch and put his mouth on the top of the panties. He moved his lips to the seam and lightly bit at it, missing at first but finally getting it. His hands ran up her smooth legs and stopped on her hips and he moved his lips to the other side of the panties and began it down a little. He went back and forth between the sides until he could see the top of the slit. His lips curled into a smile and he bit at the bottom and pulled them off in one motion. "That was a lot of work," he said with a smile "Did I do OK?" he asked looking at her. His eyes traveled back to what was now revealed to him. The wetness was easy to see with the light that was shining overhead. "What now?"