Jax Taylor came under fire on last week's episode of Vanderpump Rules during his "birthday roast" when his best pals called him out on literally everything he's ever done in his life — and if that's not embarrassing enough, it was done in front of his girlfriend, Brittany Cartwright and her mother, Cherri.

In a clip from tonight's all-new episode of the Bravo reality series, the Christian matriarch expresses her concern to her daughter's boyfriend about his behavior, particularly when it comes to his alleged relationships with men.

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"Mom has to talk to you about the roast," Brittany tells him.

It's clear that Jax, a long-time bartender at SUR, saw this coming.

"Something about you being a homosexual?" Cherri asks.

"That's just my buddies just being stupid. As far as me being a homosexual, I have nothing against it. I'm not. I've never gone down that road before," he explains.

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Things quickly escalate and Jax grows impatient.

"If you want to believe what you want to believe, that's fine. It didn't happen. You can either take my word for it or you don't," he says.

The former Hooters waitress starts getting angry with the way Jax is talking to her mother — which causes him to storm out of their apartment.

"Typical Jax," she tells cameras. "Don't be rude to me in front of my mother. I just cannot stand him right now."

This comes on the heels of reports that the couple will star in a spinoff series, where they live more of a farmer's lifestyle in Kentucky — all while Brittany's family pressures Jax into proposing. According to TMZ, execs are worried they will split before the show starts airing this summer.

Catch Vanderpump Rules on Monday nights at 9 p.m. on Bravo and watch the trailer below: