To be betrayed by a woman.
Similar to the term Stacy which some incels describe as a basic
white girl 'that goes for Chads', to
get Macyed means to be severely betrayed by a basic
white girl who made you believe she was different.
Although an unpopular term, some use the word 'Macy' as an insult towards the traitorous woman in question.
Example 1:
Person 1: I can't believe after everything I gave Alyssa, she pulled a Macy on me and fucked off.
Person 2:
Wow... I genuinely thought she was different.
Example 2:
Person : get out of my house, you
disgusting little Macy! How did I
even bring myself to trust your Macying little ass in the first place!?