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I salute the Ig Nobel prize 2008 winners for the discovery that Coca
Cola is an effective spermicide (1), and the yet more urgent discovery
that it is not (2). Promising results are however emerging relating the
contraceptive effect of Coca Cola bottle caps. The cap is administered
between the knees of the woman and firmly secured. It appears this
technique is very efficient to avoid unwanted pregnancies both in resource
poor settigs and in industrialized countries.