Corrected entry: When Arnie goes into labour and has locked himself in the room, why do the nurses and doctor not come in to help? Although they don't know the details of the situation, "she" is in a lot of pain and needs medical assistance. There must be a way for getting into the room, otherwise cleaners, room service etc. could not get in. It just seems a little hard to believe that a dozen medical professionals would wait patiently outside a room when a "woman" is in labour inside it.
Corrected entry: While this film is a comedy, it is medically impossible for a man to carry a child. Where did Alex carry the baby? In his stomach, full of stomach acid? How would the baby get nutrients?
Corrected entry: During the ride in the car, DeVito talked to another doctor at the hospital and stated that he only wanted three people in the room during the delivering of the baby. But when they get there, there are five people in the room, yet nobody reacts to that.
Corrected entry: Danny De Vito's ex-wife is about three months further along than Arnold Schwarzenegger, yet they give birth on the same day. It is stated in the movie that Schwarzenegger was pregnant for more than eight months, so she would be at least 11 months pregnant, which of course isn't possible.