All cylinders filling with water

I am still wondering if there was clean water on top the oil drained out. Only because I think the water entered 8 cylinders at the same time, and there is no way for this to happen if the engine "runs fine". Unless it is coming from below. Intake would be watered down fuel in the burn, heads would be lack of compression and water in the burn. An oil gallery full of water would increase until it caused a no run situation???
I am just like everybody else and wondering WTF???