russ's definitions
Attempting to mack on another person's significant other by talking bad about them behind their back.
If you've ever had a girlfriend/boyfriend leave you and hook up with your best friend, you can be sure some dirty macking was going on while you were dating your ex.
John: "I'll be right back guys"
Dirty Mackin' Bob: "So Cindy, did you hear how John was talking to that slut Suzy when you were out of town? He doesn't appreciate you."
Cindy, John's Girlfriend : "Don't try dirty macking on me just cause my boyfriend's not here. Aren't you supposed to be John's best friend?"
John comes back and slams dirty mackin' Bob in the face with a shovel
John: "I'll be right back guys"
Dirty Mackin' Bob: "So Cindy, did you hear how John was talking to that slut Suzy when you were out of town? He doesn't appreciate you."
Cindy, John's Girlfriend : "Don't try dirty macking on me just cause my boyfriend's not here. Aren't you supposed to be John's best friend?"
John comes back and slams dirty mackin' Bob in the face with a shovel
by Russ December 16, 2006
Get the dirty mackingmug. by Russ February 18, 2005
Get the cross-country milk float drivermug. 
Nickname of Phi Kappa Psi, the Noble Fraternity. Founded in 1852 by gentlemen who sought a fraternal bond through the great joy of serving others. Non-sectarian and elite since its founding, Phi Psi continues to stand above the rest.
by Russ December 21, 2003
Get the Phi Psimug.