It seems like Young Buck is in trouble with the law again. The G Unit rapper, whose real name is David Darnell Brown, is in trouble after he failed four drug tests while on probation. Last year Young Buck missed two drug tests and barely escaped more jail time for violating his probation. He violated his probation earlier this year when he attempted to fake a urine test and admitted to smoking marijuana with Snoop Dogg. It looks like Buck could be headed back to prison as the U.S. Attorney doesn't believe he is taking his probation serious since he continues to use drugs. Young Buck better reconsider his love for weed right now.