Right at the end of the scene where Warner breaks up with Elle, Elle is crying loudly and Warner remarks to the other restaurant patrons, "Bad salad." Elle then gets up and storms out of the restaurant, and Warner stands and calls, "OK, you get the car, I'll get the check!" At that point, if you listen closely, you can hear an extra say, "I'm not having the salad!"
There is a scene in the movie where Elle is laying in bed watching an episode of General Hospital, depressed that Warner dumped her. In the same scene, Amy, one of the sorority girls, knocks on the door to make sure she is ok. Kimberly McCullough, who plays Amy in the movie, played Robin on General Hospital.