Today Justin Bieber stopped by the Santa Monica Courthouse and met with the probation officer handling his vandalism case, and judging by the look on his face, this was clearly NOT how he wanted to spend his Friday afternoon!

Bieber was joined by attorney Shawn Holley (yup, she's repped Lindsay Lohan), and our photographers on the scene tell X17online that the 20-year-old pop star and his lawyer spent roughly an hour with the probation officer.

Bieber pled no contest to misdemeanor vandalism and was put on two years probation earlier this month for allegedly egging his neighbor's home, and he was also ordered to attend 12 anger management classes, complete 5 days of community service and pay $80,000 for the damage he caused.

The group discussed the terms of Bieber's probation, and we're guessing the subject of his partying came up. You know how he's been getting all sorts of flack for the loud parties he's been throwing at his new Beverly Hills pad? If he gets cited by the Beverly Hills Police Department, they will forward the matter to the Los Angeles County Probation Department, which could trigger a probation violation. Biebs better watch it!