In Washington, bigwigs can misspeak and misstep a million times without drawing attention. And then there are the seemingly harmless moments that stick to a person like super glue: Joe Wilson barking “You lie!”; Jesse Jackson mumbling into a hot mic that he wants to castrate Barack Obama; Dan Quayle trying to spell things.

Like coal crushed into diamonds by the pressure of a million eyeballs, such moments are forever.

During an exclusive dinner hosted Monday by the Alfalfa Club, Obama adviser Valerie Jarret had just such a moment. And were it not for an irritated tipster, Jarret might have walked away from the dinner unblemished.

According to our tipster, Jarrett was seated at the head table along with several other big-name politicians and a handful of high-ranking military officials. As an officer sporting several stars walked past Jarrett, she signaled for his attention and said, “I’d like another glass of wine.”

Garçon!

White House economic adviser Austan Goolsbee, who was seated next to Jarret, began “cracking up nervously,” our tipster said, but no one pointed out to Jarrett that the man sporting a chestful of medals was not her waiter.

“The guy dutifully went up and got her a glass of wine, and then came back and gave it to her and took a seat at the table,” our tipster said. “Everyone is in tuxedos and gowns at this thing, but the military people are in full dress uniform.”

“There was no shortage of waiters either,” the tipster added.