Looks like the “game” is wide spread: http://www.bing.com/search?q=%22cross+the+line%22+game&qs=n&form=QBLH&pq=%22cross+the+line%22+game&sc=8-15&sp=-1&sk=&cvid=9cbd0bbf42914cdea214bb89e4a4b6aa
Did you notice the questions in there about “your national service?” Just what the hell is that about?