According to TMZ Katt Williams is claiming he slapped that Target employee because the guy called him a n***a!!

During a performance Katt said  "This is what the dude at Target said ... 'Your assistant is already suing you, you p**sy ass n***er."

Katt said he flipped out when he heard the word and asked the employee, "Did you just say the n-word in front of Katt Williams?" the employee answered, "You say it all the time." 

Check out the video below!!