Top Definition
An unwritten code of conduct between all men.

This code ensures that all secrets that have the potential to cause damage to relationships, marriages, friendships, work, family or anything else, go untold to females or those who would be pissed if they found out.

All information from guy-to-guy conversations remain sacred, to the grave.
Baxter: "I boned Jimmy's sister, Natasha, last night!"
Julio: "You did...What if he finds out, he's gonna be pissed"
Baxter: "Dude Union, brother...he'll never know..."
by TJH36 August 26, 2009
4 Words related to Dude Union

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