ROTFL ICGU Share definition Flag What happens to old people when they laugh too hard. Rolling on the floor laughing and I can't get up Gran'pa texted that he was ROTFL ICGU after gran'ma got her tits caught in the mangle ROTFL ICGU by ozbukes16 January 4, 2012 0 0 Get merch Get the ROTFL ICGU mug. Buy Now — $32.95 See more merch