From http://news.yahoo.com/nkorea-criticizes-skorea-prezs-swish-skirt-044919781.html

The term "swish of skirt" is often used in Korean to describe women acting in a way seen as overly aggressive, such as housewives trying to micromanage all aspects of their children's educations.

Moon Mee-kyung, an analyst at the government-affiliated Korean Women's Development Institute in Seoul, called the North's use of the term an insult against South Korea and all women.

"We don't say a 'swish of pants' when describing men. The term disparages women as a group," she said.