Comedian Katt Williams arrested in Georgia for assaulting a store clerk...
Police tell us Katt was arrested Monday at a pool supply store in Gainesville, GA.
Officers say Katt had a verbal altercation with an employee and it escalated when he threw an object ... and then punched the employee.
Katt, who's had his fair share of arrests, assumed the position -- cops say he was on the ground with his hands behind his back ... ready to be cuffed when they arrived.
He's being held on $5,000 bail.