The 空想科学読本 and 空想非科学大全 series by 柳田理科雄 is originally Japanese.

[tongue in cheek]
BTW, the distance between the man and the woman is wider for Korean subway cars, which means you wouldn't need to lower your head so much, but the increased distance is bound to be a disadvantage.
[/tongue in cheek]

It's from the Korean translation of one of the "空想科学大戦" books. The series is mainly about how Godzilla and Mazinger are all scientifically wrong, and how you can apply science to your daily life.

I haven't really checked, but the translation at joeydevilla.com seems to be OK; the last sentence actually ends with "in order to actually peek, you have to slide your bottom forward by an obvious margin of 45 cm."