Waiting at the bus stop...
Aaron: "I wish the world was full of love"
Isaac (who had just commented on how dirty the bus stop was): "I wish the world was full of Swiffers"
On poop...
Aaron: "Poop has corn in it. But not corn for eating."
And on MLK day...
Aaron: "I see Martin Luther King Jr. everywhere, even on our street!" (We live off of MLK, and he had noticed the street sign earlier)