miniskirt and mathematics
Given distance between man and girl = CD = 160. The opening of miniskirt = AB = 4, depth = AC = 12. By simple geometrical property of similar triangle, ED = 1/3 CD = 53.3. But the vertical height of the man's eye from the miniskirt = 70, so he has to...
Now you know why some men can't sit straight on MRT.


















haha... what an interesting question!