noun. A Hitchcockian nightmare that could ruffle some feathers.
Real citation: "Jesus christ some spilled dog food in the target parking lot, its seagull-mageddon."
(Aug. 6, 2010, Miranda McCeig, Twitter, http://twitter.com/acupofchamomile/status/20498932350)
Made-up citation: "A seagull-mageddon often leads to a vulture-pocalypse. You see, nature is like Big Bird on crystal meth."