Super Tuesday for four-year-olds

This morning, I was listening to the coverage of the democratic primary on NPR and making a quesadilla for my son's nursery school lunch.

After a while I became aware of a little voice behind me singing, "Rock Obama, Rock Obama, Rock Obaaaaama."

Me: Are you singing about Barack Obama, L?

L (eating applesauce mixed with fiber powder): Yes.

Me: Do you know who that is?

L: No.

Me: Barack Obama is one of the people running for President.

L: What's a president?

Me: The president is the leader of the government in our country. [pause, while I decide whether to tell him the part that will really catch his interest.] And the president is the commander-in-chief of the armed forces.

L (applesauce forgotten, staring at me raptly): The commander of all the foot soldiers?

Me: Yes, but also ALL the military in our country.

L: And he has a bomb in his name. Rock Obama. Rock Obama. See?
Rock-o Bomb-a.