Known as a big sports lover, it was no surprise that Justin was watching the highly anticipated boxing match between Manny Pacquiao and Juan Manuel Marquez Saturday night.
While many were routing for Pacquiao, JB went the other direction, slamming the People's Champion and routing for his competitor.
Previous to and during the fight, Justin, known for his sense of humor, posted a few pics on Instagram that upset a few Pro-Pacquiaos.
Not only did he cheer for Marquez, but he also went on a rant about how Floyd Mayweather Jr. could totally take on Manny Pacquiao.
Manny's a HUGE superstar in the Philippines and JB's international fans weren't too thrilled when he poked fun of their boxing idol.
Justin also ticked fans off when he posted a pic of Pacquiao being knocked out and allegedly doing the "lean" with Michael Jackson and one of him KO'd with baby Simba saying "Dad, wake up!"
Check out the pictures Justin posted HERE! Do you think they're offensive? Did he go too far? Let us know!
Click to peep the angry fan tweets too!