421
rule
(i.imgur.com)
Be sure to follow the rule before you head out.
Rule: You must post before you leave.
And the risk to get it drasticly drops when you wash your dick. The fact that so many people get it, shows how few people wash their dick under the foreskin.
I was washing every night. And I assume my friend was too. Because we were kids, for better or worse, with helicopter parents. I assume people who live out on the street, don't get regular showers.