"To the girl from the South Side who took on a role she didn't ask for and made it her own: Happy Birthday, Michelle. I love you."
Her photo's a little more prestigious than the back of the golf cart, but it's got every bit as much feeling. Here's the power couple surveying the Washington Monument from a balcony at the White House.
"Being your First Lady has been the honor of a lifetime," wrote Mrs. Obama. "From the bottom of my heart, thank you."
What very presidential PDA. Their daughters are probably still embarrassed.