[Nyororin]

Bathrooms tend to be popular because that is where people most commonly give birth.
Supposedly, for some people, labor starts out feeling like you really have to go...
In other cases, the water breaks and the woman is in the bathroom when the baby pops out.

But it seems to be fairly common for a woman to be pushing in the bathroom and end up with a baby popping out. Panic sets in, and they leave the baby in the bathroom.

There is an image of labor being incredibly painful and needing a team of doctors to get through... But it seems that really isn't a common scenario. For most women, squatting and pushing seems to do the trick.

(I can't comment, as I have never been past about halfway through a pregnancy, and have never given birth.)