Since Young Buck was released from prison in October 2013 after serving an 18-month sentence, he's managed to keep a clean slate, but last week, he slipped up a bit. His probation officer just spoke to TMZ, and revealed that he saw Buck using "a tube to shoot a 'yellow substance' into his drug testing cup," which could land him in serious trouble.

At first claiming that he had inhaled secondhand smoke, Buck then reportedly confessed that he had recently gotten high with Snoop Dogg. Why he decided to name-drop the famously weed-associated rapper is unclear. Now Buck will have to appear in front of a judge for a hearing that will determine whether he'll face more jail time for the probation violation. It's a bummer, especially because he'd passed all 21 previous tests in the past 13 months. 

Stay tuned for updates.