Too far, Jim, too far. Things are about to get really ugly between Amber Marchese's husband Jim and, well, everyone else on The Real Housewives of New Jersey. As seen in this clip from the Oct. 5 episode, Jim totally loses it while on vacation in Boca Raton, Fla., and what he says to Teresa Aprea causes shockwaves to ripple through the rest of the group.

The drama picks up when Amber admits to having smoked a cigarette, prompting Dina Manzo to say it's because he stresses her out. "Amber, I'm sorry that you're married to a d--k," she says. "I'm sorry. I feel bad for you."

Teresa A. then jumps in with a diss about Jim's "Napoleon complex," which sets off his temper in a big way. "This is a typical example of an uneducated dumb f--k!" he yells, gesturing in her direction. He then makes several disparaging remarks about her husband, Rino, trying to "f--k [Victoria] Gotti so he could be a wannabe gangster."

The final, crushing blow, however, comes when Jim brings up Rino's past involvement with a stripper, and Teresa asks, "Do you think he didn't date a stripper?" His response: "No, but I think he f---ed your mom."

At that, the room goes completely silent — until Melissa Gorga jumps in on Teresa's behalf and berates him for crossing a line. (Jim has been repeating the same rumor about Teresa's mother, Santa, since February; both she and twin sister Nicole Napolitano have slammed him as a liar, telling Us Weekly in September that their mom is "ready to have a lawsuit against Jim for slander.")

"You don't talk about moms. No!" Melissa says. "I would have f---ing clocked him." Adds her husband Joe, brother of prison-bound RHONJ star Teresa Giudice: "Something's wrong with this guy. What kind of man says that? Ya b---h."

Watch the explosive argument above!