There is a famous myth in Japan that it feels like squeezing on a D cup oppai if you put out a hand out the window while driving a car at about 37 miles per hour. In this Cool Japai, we will comparatively verify the wind pressure when putting out a hand while the car is moving and the pressure when pushing on an oppai about 0.2 inches, which is a similar feeling as squeezing an oppai lightly. Let's find out if this myth made up by the Japanese, rumored a most perverted ethnic group is true.