idiom. To go cuckoo for the wackiest, crackiest Cocoa Puffs in the cereal aisle.
Real citation: “If that's flipping out, then Bill Clinton goes psycho-batshit-bonkers every time he confronts a 9-11 truther.”
(March 7, 2008, Althouse, http://althouse.blogspot.com/2008/03/mccain-flips-out.html)
Made-up citation: “When I miss a meal and my blood sugar reaches dangerously unsweetened levels, I am far more likely to go psycho-batshit-bonkers and/or consume a live squirrel.”