The act of telling a friend's biggest secret to a bunch of people to purposefully embarrass them. Or, saying the one phrase that could embarrass someone at the current moment. Another way to say "BURN!"
Carl: Well I saw you macking on Lisa.
Greg: I was only macking on Lisa because you were throwing up in her mom's vase and I was trying to distract her.
Lisa: (GASP)
Carl: Way to pull out the Ace Card Greg.
-OR-
(Tom witnessing a fight between Jan and Dee)
Dee: You never keep your side of the room clean.
Jan: Because I cant spend that much time in there with all you Hanson Posters all over.
Tom: Oh, ACE CARD!
Greg: I was only macking on Lisa because you were throwing up in her mom's vase and I was trying to distract her.
Lisa: (GASP)
Carl: Way to pull out the Ace Card Greg.
-OR-
(Tom witnessing a fight between Jan and Dee)
Dee: You never keep your side of the room clean.
Jan: Because I cant spend that much time in there with all you Hanson Posters all over.
Tom: Oh, ACE CARD!
by Little Oral Annie January 28, 2009
the act of giving your significant other or someone you trust total access to all areas of your body.
by tiny luke August 14, 2019
the best person out of a group
by Uno Ace Cards May 20, 2021