Justin Bieber is getting boxing tips from world champion fighter Floyd Mayweather.
The 20-year-old singer posted a shirtless video to his Instagram account, in which he tosses practice punches in Mayweather’s direction and ducks the boxer’s slow returns.
No word on why Bieber is training to fight or why a world champion boxer would give lessons to a pop star, but given the celebrities’ numerous posts to social media, they both seemed to enjoy it. Mayweather wrote on Twitter that he had a “good time.”
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Write to Justin Worland at justin.worland@time.com