Continuity mistake: Near the end of the show, Niles and Frasier are shaping hamburger patties in the kitchen. Niles has a blue bottle of water which sits on the stove top in front of him. In one shot it suddenly appears on the counter to his right; even though Niles hadn't moved it. By the end of the scene it is back in front of him on the stove top.
Continuity mistake: Near the start of the show, Roz arrives at Frasier's with baby Alice. She is standing near the balcony door in her black gown when suddenly a white spit-up cloth appears on her shoulder that had not been there previously in the scene.
Continuity mistake: When Frasier and Niles are in the restaurant, Niles is under the influence of medication. He lays his head down on his arm just as one of the geniuses arrives and greets them. In the next shot, his head is lying right on the table, with no time for him to have switched positions.
Continuity mistake: Kenny enters the booth, and Dr. Nora's purse is on the edge of the desk. Immediately in the next shot it's gone. Then it's back. When Kenny leaves it's gone again. (00:10:25)
Answer: In the last episode, they explained that Tossed Salad and Scrambled Eggs is a metaphor for the mixed-up people to whom Frasier dispenses his radio psychiatric advice.