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[[File:The Great wall - by Hao Wei.jpg|500px|thumb|right|''"That's one hell of a barrier for those sperm to cross..."'']]
A '''barrier method''' refers to any physical method of birth control. While some '''barrier methods''' focus on blocking sperm from entering the uterus (diaphragm or condom), other '''barrier methods''' focus on keeping penises at a safe distance (moats, police tape, or The Great Wall of China[see picture to the right]).
