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Click to Watch in HD > Bimek SLV On-Off contraception switch for sperm
Watch A German carpenter has invented a valve which he claims will revolutionise contraception, by allowing a man to turn the flow of sperm from his testicles on and off at the flick of a switch.
Clemens Bimek told Spiegel magazine the idea first came to him some 20 years ago, when he was watching a television documentary about contraception, and wondered whether it would be possible to control the flow of sperm with a simple valve.
https://www.youtube.com/watch?v=-B06gom1X3c and list=PL-2f0vuzcvsUBeacSzZl8CNLrsiFFTtjo
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