Professor Frink argued that Zack Greinke is better than Cliff Lee in a certain situation: before the fourth inning, after a road loss, in a domed stadium. In reality, Greinke has a 6.00 ERA in six such games between 2008 and 2010. Cliff Lee's ERA in six such games is 0.00.
Vegetarian Lisa is seen chomping on a slice of pepperoni pizza. Later in the scene, the pepperoni has been replaced by vegetable toppings.