It's 2014, fellas, and it's about time that we all get comfortable with touching each other's dicks. I'm not talking about a full-on grab, just a light grazing of the crotch. Something to say "hey, you're my bro, and I'm touching your dick in a friendly way."
Allow Channing Tatum to explain a little bit further. And don't worry, ladies, you're now encouraged to greet your besties with a friendly tit graze.
And for the advanced dick grazer, try the double dick graze.