LBMACOSHRN Share definition Flag Acronym for "Laughing both my a$$ cheeks off so hard right now." Conservative Republican: You know back in the day, I had an Obama button. Politician: Dude, LBMACOSHRN LBMACOSHRN by YouHaveNoSense April 29, 2011 0 0 Get merch Get the LBMACOSHRN mug. Buy Now — $32.95 See more merch