noun. A real cuckoo-for-Cocoa-Puffs-palooza.
Real citation: "Just once I want to post something cool about Apollo w/o the comments turning into an Apollo Denier nutbuggeryfest."
(Oct. 30, 2009, Phil Plait, Twitter, http://twitter.com/BadAstronomer/status/5293864456)
Made-up citation: "I wouldn't call my family reunion a nutbuggeryfest... That's for the medical profession and SWAT team to decide."