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1.
To flood another person's Facebook account with notifications consisting posts, comments, tags and "likes". This sometimes causes the notification pop-ups to overwhelm the users screen.
Felix and Ian decided to notifuck her by "liking" every picture in photo album

To play a prank on a freshmen, all of the seniors "liked" and commented on every single post, picture and status of his for the past year, thereby notifucking him.
by PeejayMaurice November 03, 2010