Sad Justin Bieber On A Horse

    He spent yesterday riding a horse at Griffith Park in Los Angeles. But why so sad????

    It was a nice day for horseback riding for Justin Bieber.

    But then it got hot.

    So The Biebes rode along shirtless.

    Everything was going fine...

    Until * something* happened...

    ...that caused Bieber to look like this.

    :(

    Was it something the horse said?