It's a Side Dish Battle between Burger King and McDonald's.

Classic rivalries include Ali vs. Frazier, Hulk Hogan vs. Andre the Giant, Coke vs. Pepsi, Red Sox vs. Yankees, and Nick Saban vs. his coaches. Most rivalries are acceptable.

Yankees supporters yell "who's your daddy?" at Pedro Martinez to humiliate and acknowledge him.

McDonald's and Burger King are respected fast-food chains.

The two chains have copied each other since they opened.

Both were consistent until Burger King introduced The Whopper, which McDonald's countered with the Big Mac.

One fast-food behemoth releases a new item, while the other duplicates it with minor adjustments.

It is not necessary to boil Hamden water.