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To do a Marco means to have sexual intercourse with a female about a weak into the relationship, this female will have been a virgin before the event and not long after having had sex with the female you will break up with her and run away with her virginity.
Example of to do a Marco
Simen: I think that Alexandra likes you
Alex: Well, i could do a Marco on her
by TheLegend265 May 07, 2018
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