"Why does Uncle's thing pulse when he comes?" An immature teenager gets hooked on the sensation of ejaculation. Preying on his lust, he secretly studies with an old man without telling his parents. "This pulsing feeling is fun!" He repeatedly demands to ejaculate, finding the throbbing of his dick at the moment of orgasm enjoyable. A shameless record of intercourse continued until the middle-aged man's sperm was depleted.
