Movie with Samuel L. Jackson and another guy (Channing Tatum maybe?)?

I remember seeing a movie a long time ago where Samuel L. Jackson comes into a gym and this white guy is shooting a basketball (I think it was Channing Tatum but I’m not sure). Sam jackson says “Hey, you there! Shooting the basketball. What’s your name, sir?” And the other guy is like “Man, I ain’t no sir” and Sam... show more I remember seeing a movie a long time ago where Samuel L. Jackson comes into a gym and this white guy is shooting a basketball (I think it was Channing Tatum but I’m not sure). Sam jackson says “Hey, you there! Shooting the basketball. What’s your name, sir?” And the other guy is like “Man, I ain’t no sir” and Sam Jackson says “Oh, well are you a ma’am?” Anyone know this movie?
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