TMZ caught the singer taking about a million mulligans.

We'll stop laughing at Justin Bieber when he stops making it so easy. He's had plenty of opportunities to show us he's growing up, but every time he manages to act like a spoiled brat.

The intrepid vultures at TMZ just caught this exquisite video of Biebs hitting the links. In the course of a minute, you can see him transition from a cool, collected adult to a big baby. He hits a bad shot and slams his club into the ground in frustration (bad etiquette). Then he pours about five balls on the course and takes mulligan after mulligan (against the rules). He better have marked those shots on his scorecard. Otherwise I'll lose all respect for him.

Sources: TMZ