Wallflower, peacemaker, peripheral player …

New cast member Lydia McLaughlin has been all of the above on this season's edition of The Real Housewives of Orange County, but on Monday, the Dana Point, Calif. native finally got into the spirit of things, getting into heated words with Gretchen Rossi and her beau Slade Smiley, after Slade made one too many snide remarks.

The confrontation came after Slade — no stranger to snark — clandestinely nicknamed Lydia "cheeseburger," the joke being that the thin housewife never eats to maintain her wiry frame.

Lydia confronted Slade and Gretchen about