Credit: Photo via Twitter Photo: Kim Zolciak and Kroy Biermann's Wedding Photo

On this season of Don’t Be Tardy for the Wedding, we’ve watched Kim Zolciak and mother Karen duke it out of dresses, tastings and more, but Karen’s latest meltdown at Kim’s wedding really takes the cake. Pun intended.

Earlier in the season, we saw Kim pick out expensive porta potties for her guests to use because she was adamant about not wanting random people running through her house.

Yet when Karen’s sister (Kim’s aunt) needs to take a tinkle on the big day, Karen leads her straight into the house, only to be confronted by security.

When security informs Karen that she and her sister can’t use the bathroom inside the house, she tells them to get out of the way or she will “bring the house down.” This lady is not messing around.

When Kim is finally made aware of the situation, she tells her mom to use one of the porta potties she and Kroy paid $5,000 for, and as Kroy is telling his mother-in-law that there are no exceptions to the rule, Karen yells, “You know what, Kroy, f*** you!”

Watch all of the porta potty drama go down below!

Credit: Bravo Photo: Sneak Peek of the Season Finale of Don't Be Tardy for the Wedding: Kim Zolciak's Mom Threatens to "Bring the House Down" (VIDEO)