Vatican roulette
The rhythm methodThe rhythm method.
Meaning
1 senses(slang, uncountable)The rhythm method.
Origin
From the Catholic church's prohibitions on active methods of contraception, and its perceiFrom the Catholic church's prohibitions on active methods of contraception, and its perceived lack of reliability. By analogy with Russian roulette.
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Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable