Top Definition
The act of throwing away and deleting EVERYTHING that reminds you of your ex-boyfriend/girlfriend.
ref - "Lacuna" is a fictional corporation that erases one's memories of their ex's. From the movie "Eternal Sunshine of the spotless mind".
Joe - "Are you over your ex yet?"
John - "Hell yes, I Lacuna'd that bitch months ago!"

Jill - "Why are you acting like this?"
Jack - "Don't mess with me bitch, I will Lacuna your ass!"
by therealblover February 23, 2010
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