steady clapping of his tip against her cervix built a crescendo that tipped over quietly , then roared to life as she called out his name , biting his shoulder in ecstasy , his thighs and ass tensing under her calves , now clutching him to her , his orgasm coming with a full-body tension and her name grunted through a clenched jaw , the sound of three syllables so sweet that tears filled her eyes , happiness in fluid form .