Young Buck

Young Buck is facing jail time, after he failed a drug test for his probation.

According to, the G-Unit rapper tried to fake his drug test, but was caught by his probation officer with his pants down… literally.

The officer says he saw the rapper using a tube to shoot a “yellow substance” into his drug testing cup last week.

In court docs, Buck says he smoked marijuana with Snoop Dogg. Now, he may face fail time for the violation.

Before the dirty test, he had tested clean for his previous 21 mandatory tests since November 2013.