lucky SOB Share definition Flag a short form of "Lucky Son of a Bitch!" said when a dude is about to be fucked up in some serious situation but he made it with no harm. jamal: Paul ! WATCH OUT ! Paul: oops! That was close. jamal: you lucky SOB! lucky SOB by fullArmani January 13, 2011 0 0 Get merch Get the lucky SOB mug. Buy Now — $32.95 See more merch