dumbassery

From dumbass +‎ -ery.

dumbassery (uncountable)

1. (slang, vulgar) Immature, foolish behavior; behavior typical of a dumbass.
   • 2008, Sara Zarr, Story of a Girl‎, →ISBN:

     Speaking of savages, Bruce Cowell and his pack of jock-wannabes, who'd been kicked off every school team because of attitude problems and/or the use of illegal substances, were right on schedule for their weekly feats of dumbassery.

   • 2011 August 31, Max Read, “Wikileaks Freaks Out at Newspaper Over Its Own Dumbassery”, in Gawker‎:

     Wikileaks has always had a healthy sense of self-importance—one that seems, at least in part, well-deserved. But there's something uniquely hubristic about accusing a major newspaper (and former collaborator) of "gross negligence or malice" over the release of 251,000 unredacted top-secret cables—when the fault lies with the website itself. [see title]

   • 2023 April 28, Madison Malone Kircher, Anna Grace Lee, “This Week’s Tiniest Social Media Drama Is About Olive Oil”, in The New York Times‎:

     “Honestly god bless the olive oil war, this is exactly the kind of ludicrous startup-brain-worms low-stakes drama that the world needs more of right now,” tweeted Helen Rosner, a New Yorker staff writer who covers food. “No villains, no victims, just top notch public ego dumbassery.”

• dumbassity