noun. May be caused by immodest ingestion of rageahol.
Real citation: "Words don't describe my pissed-off-osity right now. DO NO DESCRIBE."
(May 20, 2010, Twitter, http://twitter.com/jerocrowe/status/14387973474)
Made-up citation: "I don't often engage in senseless pissed-off-osity, but when the servants forget to lick-clean the door handles, I lose it."