Braindeadism Share definition Flag A disease when you tend to do something stupidly and not realize what you are doing. Guy ; I have braindeadism. Girl ; I know, you keep hitting yourself. Guy ; I AM!? Braindeadism by CHINGPINGLING January 17, 2011 0 0 Get merch Get the Braindeadism mug. Buy Now — $32.95 See more merch