if a woman sat on a skull how long would it take for the skull to collapse?

The collapse of a skull under pressure would depend on various factors, including the weight of the woman, the type of skull, the surface it is resting on, and the angle and distribution of the weight. Human skulls can tolerate some weight, but they are not designed to withstand heavy pressure from above. In general, a human skull can bear about 200-300 pounds of force before it may start to crack or collapse, depending on the distribution of the pressure. If a woman were to sit on a skull, it might not take much time at all for the skull to fail if the weight is significant and concentrated. For a precise answer, experiments would need to be conducted under controlled conditions to measure the exact load and time before failure occurs. Please remember that such actions should be approached with sensitivity and respect for human remains.