The unintended encounter

A young boy, with a well-hung young body, finds himself in a compromising situation when he accidentally wakes up next to his elderly, heavily pregnant grandmother in the middle of the night. As he realizes the gravity of the situation, he quickly grabs his massive penis and attempts to navigate the confusion, but it's too late as his grandmother stirs, revealing her tight nightgown and the realization that their relationship will never be the same.