Real Housewives of Atlanta (RHOA) Reunion Part 3 will be perhaps the most dramatic and emotional of the three-part reunion episodes. 

The ladies of RHOA seem to continue having difficulty reconciling their differences and the rift will be taken a notch higher with the involvement of Momma Joyce.

In the third episode of RHOA Reunion, which will air on May 4, 8 p.m. on Bravo TV, Kandi Burruss runs out of patience when co-star Nene Leakes fires an insult to her mother, Momma Joyce. 

The exact offensive words are not mentioned, but in an article by Us Weekly states that Burruss finally reaches the end of her tether.  She "raises her voice and points her finger" to Leakes to confront her with an offense.

"I try not to address anything that hasn't been talked about on the show," Buruss tells Leakes, who sits with her on the couch.  "But you do it all the time." 

The 37-year-old Grammy awardee is referring to a particular comment Leakes made that she describes as "low in the gutter." 

Not to anyone's surprise, Leakes flares up and said, "That s*** p***** me off.  What you said was some b******."

Watch the actual video clip on Kandi Burruss and Nene Leake's confrontation.

As expected, host Andy Cohen arbitrates the heated argument and asked Leakes to offer an apology out of "being disrespectful." 

The latter refuses and rebuts, "I said what I said, and I am not changing on it!"

In previous episodes, Burruss had some issues with Momma Joyce, accusing her of spending spent all her money for many years.  Her mother, in an emotional response, emphasized that her role was one of sacrifice, and that she has always been fighting to put food on the table for her children.

Real Housewives of Atlanta Reunion Part 3 will air Sunday at 8 p.m. ET on Bravo, and can be watched online via live stream by clicking here.