O'brienism Share definition Flag (N.)- A style of speech, when you say words in an informal manner to be comical. Eye just learned what O'brienism is aboot, but anywhore, I'll see ya laidher. O'brienism by WESCOTTTTTTTTT October 18, 2008 0 0 Get merch Get the O'brienism mug. Buy Now — $32.95 See more merch
