Prompt

The shaft of her penis grows longer, taller, and much thicker along the video. Her penis is slowly growing upwards, becoming visibly taller and longer and thicker with each moment. Her penis grows to a hyper gigantic size and a clear semen drops from cock tip. Penis makes a muffled gurgle as it's growing bigger and bigger. She moans gently and sexy along the video. After 2 seconds she says in the most sexy and horny voice: "Yes... Yes... mamma needs to get bigger... and bigger... oh yes... she's soo fucking biig..."