According to Jeffrey Duncan, 43, his friend Ronald Washington 'completely ripped off' his personal mantra from civil-rights leader Martin Luther King Jr. 'Ron's always saying how if someone doesn't have a cause worth dying for, then that person's life isn't worth living,' Duncan said Monday. 'Nice try, Ron, but you can't fool me. You totally stole that whole idea from Dr. King.' Duncan said he hopes King's estate 'nails Ron's ass for plagiarism.' 