"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
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" What is the definition of "dirty macking"?