Sister Wives star Kody Brown opened up about his experience competing on Special Forces: World’s Toughest Test season 4, where he claims he had conflict with his costars caused by his “big mouth.”

“I’m a Gen X man, it’s just a different culture,” Brown, 56, told Entertainment Tonight on September 10. “Most of them were younger than my children, or I was old enough to be their parent, and I have a big mouth.”

He continued, “I think of it as being very generous; other people think about it as being bossy. Maybe it was a little demanding it came across wrong, I don’t know. I think I’m friendly.”

In addition to Brown, the cast includes Real Housewives of New Jersey’s Teresa Giudice with her daughter Gia Giudice, former Empire star Jussie Smollett, podcaster Brianna “Chickenfry” LaPaglia and Montana Boyz TikToker Mark Estes, to name a few.

 <span class="wp-caption-text">Pete Dadds / FOX</span>

Pete Dadds / FOX

While Brown didn’t reveal who his conflict was with, LaPaglia, 26, previously hinted at an on-set feud.

“Let’s just say I didn’t know who he was while filming,” she shared via her Instagram Story last month, according to Us Weekly. “And we didn’t necessarily ~get along well~ lmao you will see.”

Gia, 24, seconded LaPaglia’s comments with a statement of her own.

“There were definitely some people that would get under your skin a little bit, and you guys will see that on the show,” she said during an August episode of her Casual Chaos podcast. “You guys have all been talking about him already. So, I’m sure you could assume who it is.”

Throughout the season, reality stars compete in challenges typically used in real-life Special Forces training. According to Brown, the mental tests were the toughest for him.

“I was messing up quite a bit. But it wasn’t because I wasn’t physically fit, it was because I wasn’t mentally fit,” the father of 18 said.

Special Forces season 4 will premiere September 25 on Fox.