Bakabakashi Share definition Flag (n): Stupid, idiot. Can be used when saying Hi to a close friend just to joke around. C.M.- "Hey Bakabakashi! Sup?" K.H.-"Hey lame!" Bakabakashi by Hawaiiquikslvr May 3, 2007 0 0 Get merch Get the Bakabakashi mug. Buy Now — $32.95 See more merch