The Most effective contraception ... in the
world being 99.9999999999999999999% effective.
Studies by the University of The West of Scotland show that women are instantly turned off by the phenomenon and instantly
friend zone you or worse put out a restraining order on you.
Basically if you wear Socks & Sandals and have never had sex before, you never will*.
*= Exceptions to this rule have been found in
Canada.