Can twins be born at the same time?

It is not humanly possible to push out two full sized babies at the same time through a 10 cm hole. I mean, could you imagine?! Babies can be born minutes, or even seconds apart, but it is not possible for you to have TWO babies at the exact same time. Thinking about it makes me cringe. This answer also goes for a Cesarean surgery (also known as C -section, because the Doctor has to find one baby, and pull it out, then another.