After setting up his club and bending his knees per Smith's instructions, Derulo performs his swing at the same time that Smith cautions, "Don't swing yet.".
"You ought to put some ice on that," Derulo says.
Smith then sets up his swing and let's it go, hitting Derulo between his legs.
Smith also shared a selfie with Derulo on Instagram, showing off his newly chipped teeth.
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