Episode Help

I think this episode had Mo with his new girlfriend that he bought an expensive bracelet for. Marcus and his dad spot her at the mall with some other guy. They see her with another guy and his dad says, "Maybe it's her brother."

She kisses him and he says, "Maybe they from the south". Then they start to really go at it and he says "The DEEP south!"

I need to know this episode! It's too funny damn it!