Ah, finally. One of these sketch-specific threads I can help out with. This was one of my fave bits with Grover and Mr. Johnson, you'll see why at the end.
Mr. Johnson comes in to have lunch at Charlie's like usual, muttering to himself why he does this.
Grover promptly comes by and states the nine items from the menu. Don't recall all the items, but I know that peanut butter and jelly sandwiches are there, along with "the ever popular arroz con pollo" (chicken and rice, a dish I enjoy often here in PR cuisine). And then he says "#9 is the Special of the Day."
The thing to remember is that each item on the menu is numbered, so it makes sense that he gets to the last item on the menu as #9, the Special of the Day. Intrigued, Mr. Johnson orders the Special of the Day, and Grover goes into the back to get it.
Here comes the punchline. When Grover brings out the dish, it's a sort of pinkish 9 standing upright instead of at an angle like the traditional SS-font 9 on a bed of lettuce.
Grover: Here you go, the number 9, the Special of the Day.
Mr. Johnson (unphased): Ah, well, you didn't ask me how I wanted it.
Grover: Beg your pardon?
Mr. Johnson: Well, this number 9 is raw and I prefer my number 9 medium rare. So take it back and bring me another one.
Grover then dumbfounded just faints to the ground.
Hope this helps and have a good day.