Many things have happened to Justin Bieber in the past year.
He got dumped by US singer-actress Selena Gomez, got into trouble with former US president Bill Clinton, got a pet monkey, got separated from said monkey by the authorities, the list goes on.
No wonder he's been letting off steam in nightclubs all over the place.
The baby-faced Canadian YouTube wunderkind who became the world's biggest solo male pop star is dangerously close to becoming just another 19-year-old making trouble.
In the last year alone, he's been involved in at least three different nightclub scuffles, threatening to dethrone reigning party fight king Chris Brown.
Asked to explain himself via e-mail, Bieber told LOUD that it's all part of his growing pains.
"I am just growing up like all other kids my age," he said.
"I'm going to make mistakes but I try to be the best person I can be and be a role model for my fans.