Vinny Guadagnino and Angelina Pivarnick no doubt have an unconventional relationship. The Jersey Shore: Family Vacation stars — who often flip back and forth between hurling insults at each other and flirting up a storm — left a newly returned Sammi Giancola shocked by their “weird” lunch banter on tonight’s episode of the hit MTV reboot.

The conversation begins light-hearted as the cast marvels over their disbelief that Giancola came back to the show after more than a decade. However, it takes a quick turn when Guadagnino makes a sly dig at her toxic relationship with former co-star Ronnie Ortiz-Magro.

“You think you’re so funny, Vinny. You think you’re so funny,” Giancola fires back, before Pivarnick chimes in, “Vinny, you’re so cool. I forgot to tell you — I want to [bleep] you night and day and [bleep] every day of your life.”

She continues, “Vin pushes my buttons and he loves it … You’re an asshole! Vin, where’s your dick? Jerk-off!”

Meanwhile, Guadagnino brings up the episode that aired earlier this year in which Pivarnick gave him a lap dance. After thrusting her pelvis into his face in the flashback video, she attempted to feed him her already-chewed-up banana — much to his objection.

“After that lap dance, how could I not want a [bleep]?” he sarcastically asks at the lunch table.

After all, he’s “been in love with Angelina since he was 20” — at least, according to Pauly D, whose joke prompts another flashback picture from the duo’s younger years.

“He wanted you in high school but he said you were out of his league,” Pauly tells Pivarnick, while Guadagnino quips, “Now I’m way out of yours.”

While they continue going back and forth across the table, Giancola doesn’t seem to know how to react to the “wild” conversation. She tells cameras in her confessional, “I’ve had pre-warning from everybody that Vin and Ange have this tension together. So I’m sitting here right now looking them go at it and I’m like, ‘This is weird.’”

Weird? Yes. But that certainly doesn’t stop Pauly D from suggesting they take things into the iconic smush room — a.k.a the designated hookup room from the original Jersey Shore house — to which Giancola breaks out laughing and asks, “Is there a smush room?”

Not yet! But the trip is still young.

Jersey Shore: Family Vacation airs on Thursdays at 8/7c on MTV.