‘Teen Mom 2′ Star Jenelle Evans’ Son Jace Throws Tantrum After Drinking Caffeine

Bad parenting?! Teen Mom 2 star Jenelle Evans' mom Barbara had to deal with son Jace's meltdown after he apparently got into Mommy's Coke in the fridge and started guzzling it.

Barbara has full custody of Jenelle's oldest child, 6, who stayed over with his mom and snatched her soda during a pizza dinner. The 24-year-old is also mom to Kaiser, who's almost 2, with ex-fiancé Nathan Griffith.

https://www.instagram.com/p/BC3-HhDikKW/

"I’m not going to be able to do this. I had like, four, hours of sleep because everyone had caffeine all night and didn’t go to sleep until like 2 a.m.," Jenelle complains to Barbara in a clip of Sunday night's episode of Teen Mom 2.

She said they had a sleepover with boyfriend David Eason's daughter and his sister's son. She and David went to dinner while his sister watched the kids.

"We came back home and they were still awake," the reality star tells her mom. "I ordered pizza for them and I had Coke in the refrigerator that was mine and Jace was drinking it."

Barbara gasps. "When Jace comes, you’ve got to hide the Coke!" she scolds her daughter.

https://www.instagram.com/p/BDeZNh4CkDv/

RELATED: Jenelle Evans' Boyfriend David Eason Arrested

Poor baby Kaiser is fussy and crying, and when Jace leaves, he throws a fit in Barbara's car. "Every time you come from Mommy's house, you're mean!" the grandma tells the little boy, who at one point tells her to "Shut up!"

Yikes. Hopefully Jenelle will keep the caffeinated, sugary drinks far, far out of her kids' reach in the future!