I wonder what would have happened if lefty regularly appeared with other characters? grover has occassionally been a door-to-door salesman. I wonder what an encounter between the two woudl be like (whether grover appeared in the form of a salesman or not)? Guy Smiley would also be a good character to appear with lefty. Guy is often loud, and Lefty is often trying to keep Ernie quiet. And I wonder what woudl happen if lefty tried to sell somethign to Biff, Sully, Oscar, Herry, or Sherlock Hemlock.
back to the topic of this skit, I wonder if Lefty needed to eat the food that he was using, therefore unwilling to sell the food.