VIDEO: J-WOWW, Sammi Sweetheart Come To Blows On Jersey Shore

Sept. 3 2010, Published 10:25 a.m. ET

Catfight!

Yes, the fur was flying on Thursday's episode of MTV's smash-hit Jersey Shore, as Ronnie Magro's continued cheating on Sammi Sweetheart sparked the season's biggest blowup to date.

Watch the clip on RadarOnline.com

The fiasco began when J-WOWW and Snooki penned an anonymous letter to Sammi, detailing Ronnie's two-timing ways. Apparently, Ronnie’s been in the habit of hooking up with girls at clubs, then returning home to bed with Sammi. Even the diplomatic Situation tells Sammi so.

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Sammi, distraught with confusion and anger, told her roommates of the letter, "Whoever wrote me the note, thank you, I appreciate it because I look like a expletive idiot."

The tension continued to grow, helped by pot-stirrer Angelina Pivarnick, who told Sammi about J-WOWW's poison pen. It all boiled over at Sunday dinner, when J-WOWW and Sammi began profanely cutting each other down face-to-face, culminating in Sammi slapping J-WOWW in the face, only for J-WOWW to take Sammi down -- by her hair.