Enema... Cleans everything out if your really worried about it. Not eating 4 - 6 hours prior to it helps, and shitting before certainly helps... If you don't the guy your with could be in for a nasty surprise.
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http://www.prizerebel.com/index.php?r=218143
Truly free stuff... And you don't have to refer
friends. Unlike some of those other stupid offers.