In 2009, when Jacob Philadelphia and his brother, Isaac, were each given the chance to ask newly elected President Obama one question, Isaac inquired about fighter jets. And Jacob? He was curious about the president's hair.
"I want to know if my hair is just like yours," the boy told Obama.
"Why don't you touch it and see for yourself?" Obama replied, lowering his head, encouraging the hesitant 5-year-old by saying: "Touch it, dude!"
You might like: 10 Retro Hairstyles to Try Right Now
If this image of President Obama and Jacob hasn't hit your inbox yet or been shared on your Facebook wall, it's on its way. Although the image, captured by White House photographer Pete Souza, has been hanging in the West Wing for three years, the "New York Times" just filled everyone in on the back story, and it's quickly become their "most emailed" article.
Why does such a simple photo evoke such an emotional reaction? Is it seeing the most powerful man in the world literally bending over to help a little boy? Is it the fact that the question of hair had occurred to the boy in the first place? Is it the implication of race? Probably a little of all three. And then some.
So what did Jacob think after he got to feel the head of state's hair?
"Yes, it does feel the same," Jacob said.
What do you feel when you look at this photo?