The most party-happy cast on television is in one of the most party-happy cities in the world, but that won't keep the drama from hitting an all-time high on Party Down South.

Mattie Talks About Her DUI Charges

After endless bad weather, Daddy, Murray, Lyle, Walt, Tiffany, Lil' Bit, Mattie and Lauren headed to Cabo San Lucas, Mexico, where they are living it up and celebrating Lil' Bit's birthday. But even though they're having a good time as they party, drink and just have a good time, the drama that has been simmering all season as a result of Daddy and Lil' Bit's pre-Georgia hookup is still set to explode.

Mattie in particular has been getting increasingly more infuriated over the situation, and her anger hit a new high after she and Lil' Bit both entered a lap dancing competition where Daddy was the judge, and Lil' Bit won. Now, after she continues to witness the two acting like lovers when Lil' Bit is still dating Grant, she will explode.

Lil' Bit QUITS-Find Out Why!

"Once again, Daddy and Lil' Bit are all over each other," she says in a preview clip for the Thursday, August 7 episode.

After her anger fuels some more drinking, her alter-ego will arrive-prompting a warning from Lyle.

"Here comes Martha," he says.

From there, Mattie gets into a fight with Lil' Bit and Daddy, using her trademark "Bye Felicia" slogan to express to them both that she's done with this drama, before she decides to just remove herself from the situation completely.

"I'm leaving!" she threatens in a clip as she walks from the hotel with Lauren trailing after her.

Party Down South airs Thursdays at 10 p.m. on CMT.