Vatican roulette

As Catholics, they are denied any form of contraception and have to play "Vatican roulette" instead.

The rhythm method or Vatican roulette as it is called by hip Catholics, is a waste unless you are ready to surround yourself with thermometers, graphs and charts.

The pope can thunder against birth control (other than a method based on timing a woman's cycles, derided by critics as "Vatican roulette"), but 70 percent of Brazilian women use artificial contraception.

(Bob Hope called it "Vatican Roulette," and after the third one, he and Crosby gave her track shoes and starting blocks; Tennessee Ernie Ford insisted, "You've got to find out what's causing this.")