Don't expect Mama June Shannon to become a sugar mama for her daughter Lauryn "Pumpkin" Shannon and her baby daddy Josh Efrid. The couple just welcomed their first child — while still enrolled in high school — and the From Not to Hot matriarch has some tough words for the new parents.

"Josh gets on my ever-loving last f–king damn nerve," she said in the preview of Friday night's episode, which was filmed before Pumpkin gave birth to her daughter Ella Grace this past December. "I told him he needs to get a better job if he's going to support my grandchild. Every time he thinks that I let my guard down, I'll be there saying, ‘Boom motherf–ker.'"

She continued, "Pumpkin knows ain't none of my babies' daddies stuck around. But I don't want the same thing to happen to her. She is 17; still in high school; supposed to be graduating this year and now she's having a child." Josh, 19, then proceeds to try to move into her house — without her permission. Sigh.

While she doesn't want her daughter to follow in her footsteps, she makes it very clear she will not keep opening up her wallet for Pumpkin and Josh. "Pumpkin doesn't understand bills. Like, she's always coming [to me saying], ‘Hey, I need $100. Hey, I need gas.'" she added. "But if Josh thinks I'm always going to be him and Pumpkin's safety net… They got another damn thing coming."

However, Mama June's new boyfriend, Geno Doak, seems optimistic that the relationship between June and her future son-in-law will change once baby Ella arrives. "June and Josh get along about as well as Sugar Bear and toothpaste," he joked, "but it will get better once the baby comes—as long as it don't look like Josh." Speaking of Sugar Bear, Mama June is also dealing with custody issues when it comes to her ex and youngest daughter Alana "Honey Boo Boo" Thompson, 12. Last week, Sugar Bear (real name: Mike Thompson) threatened to take June to court over visitation.

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"You want me and you to sit in front of a lawyer? What are you going to tell 'em? 'I'm a deadbeat father…' How are you fricking going to pay for this s–t? You don't have a pot to piss in or a window to throw it out in," June told her ex before he angrily responded, "I swear, June Shannon, I will spend every cent I have to be able to see my daughter. I will take your a– to court."

Making matters worse, Sugar Bear's new wife Jennifer Lamb is spreading rumors that he is not Honey Boo Boo's real father. “I know I will love Mike’s child just like I love mine, but that lawyer said something that just keeps sticking in my mind. She asked if there's a chance Sugar Bear isn't Honey Boo Boo's biological father and whether or not a DNA test had ever been done," she said on the show. “If it turns out that Alana is not his, June Shannon will be out of my life forever. And I sure ain’t paying child support for a kid that’s not Mike’s.”

Never a dull moment in the Shannon household. Watch how it all goes down when Mama June: From Not to Hot airs Fridays at 9 p.m. on WE tv.