Because birthdays are a universal topics ("there's not a person in this room who hasn't had a birthday"), last night on the Late Show David Letterman dedicated his top ten list to Barack Obama's 50th birthday festivities.
So what did the President do to celebrate? "Helped himself to a slice of the First Lady's carob-flavored kelp loaf birthday cake," for starters, followed by sending the 82nd Airborne on an In-N-Out run. Here's the video:
Video: Obama Birthday Top Ten