A woman on a dangerous day is the estrus period in animals, the timing when a female seeks a male. Even in humans, the instinct to want to be vaginal cum shot remains, and the hormonal balance is in place to accept it, so it is highly sensitive and lively. Since it is the timing when you want to fertilize, it is understandable that many women reach their climax at the same time as vaginal cum shot and cannot move.
