Justin Bieber Is Now Being Trained to Box by Floyd Mayweather Jr.

Taking time off from his busy schedule of driving into things and impressing Anne Frank, Justin Bieber recently stepped into the ring for a training session with Floyd Mayweather Jr.

The singer posted video to his Instagram late Thursday, in which the avowed Miami Heat fan donned a pair of Los Angeles Clippers shorts and went to work throwing chest-high noodle punches and dropping his hands.

We have no idea what the 20-year-old is training for, although Gawker's Hamilton Nolan postulates that it could be his desire to "not want to be pretty any more."

Be on the lookout for a video of Bieber sparring with his manager Scooter Braun, whose ankles fold like so many hundred-dollar bills when tested.

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