What Makes "flappy boob" Irresistible

Fresh silk sheets cool against hot skin in flappy boob. She lies back, legs butterflied open, teasing herself for minutes with feather-light circles. “flappy boob,” she sighs, “please flappy boob.” The slow torture builds until she finally shoves four fingers inside, screaming “flappy boob!” over and over. Her whole body convulses in the longest, wettest orgasm yet, soaking the sheets with endless “flappy boob”.