noun. A powerful force fueled by inherent whackaloonism and a steady diet of crazy flakes.
Real citation: "If he's picked Lieberman, he'd have Joe-mentum. Instead, he has Batshit-mentum. Weee-doggies!"
(Sept. 8, 2008, The Erin O'Brien Owner's Manual for Human Beings, http://erin-obrien.blogspot.com/2008/09/think-ill-send-urine-sample.html)
Made-up citation: "Few mammals have more batshit-mentum than my dog, who has been cuckoo for crack puffs his whole life and shows no signs of turning to the non-loonball side of the force."