noun. An adorable, orgasmic, apocalypticish moment of cuteness that leaves no "aww" un-"aww"-ed.
Related terms: fuckageddon, crapageddon, shitageddon, skankageddon.
Real citation: "It's basically just a day of record breaking here in the District. First, there was the Cuteaggedon. Now: The Most Ground-Breaking D.C. Gossip Item Ever In the History of the World."
("Caution: Networking in Progress," Dec. 14, 2005, Wonkette, http://www.wonkette.com/politics/juleanna-gloverweiss/caution-networking-in-progress-143170.php)
Made-up citation: "Unlike the Rapture, the Cuteaggedon doesn't leave Jews and heathens to a hellish fate before Jesus swoops in like Rambo to show the anti-Christ a little tough love. That's why the Cuteggedon is cuter."