She skillfully maneuvered my rod until it rested at a downward angle against her nether crease and held it there with her movements and her thighs. Sh... used her hands to caress my buttocks and back, placing a few long fingernail scratches along my spine and sides. I had to fight to keep my hands and feet steady as I felt the supple firmness of her backside and the feminine musculature all along her back. It was like having some one else jerk you off. The motion of our dancing, the heat of her. “Tell me … god … tell me that I’m better … better than … than that cute … hot … fucking little blonde TART …”My brain was busy processing this when she added “and … and GOD … please … than my… GOD … THAN MY FUCKING SEXY LITTLE DAMN SISTER …”Fuck … this was turning into a gold mine of information! I thought this was about her being better, and while it was, it was also so, so much more as well. I heard the adjectives she had used … hot little blonde tart … sexy little sister …”Yeah. I knew. I should have said, we ran the standard antibody tests and his blood didn't react, at first." What does that mean?" It clotted with neither the A nor the B group antibodies and showed no RH factor markers. So we typed him at O negative, which is what he received during surgery. The lab tech got interrupted by an emergency and stepped away, not disposing of the samples. When she came back, she wasn't sure where she was in her testing and double checked her last results to make sure she didn't. There were two competing standards – generally accepted ox-weighing principles and international ox-weighing standards. However, both agreed on one fundamental principle, which followed from the need to eliminate the role of subjective assessment by any individual. The weight of the ox was officially defined as the average of everyone’s guesses.One difficulty was that sometimes there were few, or even no, guesses of the oxen’s weight. But that problem was soon overcome. Mathematicians from the.