2/23    19M Americans get STDs/year. How many years will it take before
        all the Americans get STDs?
        http://holykaw.alltop.com/the-ultimate-guide-to-safer-sex-infographic
        \_ Forever because there will always be lifelong virgins.
        \_ Slutting around pre-marriage is a new thing. So, this.
           \_ New as in since the 20's, right?
        \_ My niece won't get it since I don't have it.
        \_ Well, all it takes is one forever virgin for your condition
           to be true, so the answer is more of a probabalistic near infinity.