Correction: An earlier version of a photo caption with with this column incorrectly described Rahm Emanuel as the mayor of Chicago. Emanuel is the mayor-elect; he is to be sworn in May 16. This version has been corrected.

Mitch Daniels, left, Katie Couric and U.N. Ambassador Susan Rice arrive at the Gridiron Dinner Saturday night. (Richard A. Lipski for The Washington Post)

How fascinating, the president told the 650 guests at the downtown Renaissance Hotel, to be meeting at a time when, across the world, “a powerful spirit of change is tearing down old regimes, decaying institutions, remnants of the past.”

Pause. “So, look out, Gridiron Club. . . I mean, look at this getup. Forget about winning the future. How about entering the present?”

By that point, though, Obama had already been serenaded by a gang of Gridiron members, impersonating the GOP House leadership while dressed as Hell’s Angels, about how they’re “gonna block Barack around the clock,” to the tune of the old Bill Haley song.

We’re gonna move Obama to the right

We’re gonna mock mock mock his election fight

We’re gonna talk, gonna talk, and then we might indict!

Colin Powell (Richard A. Lipski for The Washington Post )

Case in point: Indiana Gov. Mitch Daniels joking that he got his duds from “the bearded guy at Men’s Wearhouse. Anyone else notice, you never see him and Wolf Blitzer in the same place at the same time?” Health Secretary Kathleen Sebelius on Mitt Romney: “We have more in common than our hairstyles: We both used to think health care reform would advance our careers.” Al Hunt of Bloomberg feigning surprise that the absent Sen. Chuck Schumer would miss a chance to schmooze reporters: “It’s like Charlie Sheen missing a hooker’s convention.”

Only among friends, right? They kid because they love. Right?

In the D.C.-as-high-school metaphor, where the 3,000-person White House Correspondents’ Association spring dinner is fondly known as “prom,” Gridiron is something like the Student Council Follies. The 126-year-old group is a relatively exclusive cadre of the Washington press corps — limited to only 65 active members, most of them well over 50 — whose preferred method of entertainment in 2011 remains Broadway-style current-events song parodies.

Arianna Huffington. (Richard A. Lipski for The Washington Post)

And with that, a parade of 20 Gridiron members traipsed across the stage, goofily costumed as the 2012 GOP hopefuls — Romney in a hospital gown, Rick Santorum as an altar boy, Haley Barbour as a Confederate soldier, Michele Bachmann in thigh-high red boots, Rudy Giuliani in a pink ballgown (Don’t get the jokes? Then you’re not as politics-consumed as this audience), and so on.

I’ve seen Huckabee at his weekly weigh-in

Sarah Palin out surveyin’

Eye of Newt and chin of Romney

Guy in drag, that’s Giuliani

Mitt he’s drivin’ fast and far

With man’s best friend strapped to his car

Chicago Mayor-elect Rahm Emanuel (Richard A. Lipski for The Washington Post)

Like, the one about how before Rahm Emanuel joined him as chief of staff, his approval ratings were above 60 percent and unemployment was below 8 percent — so “good luck, Chicago!” And how he’s grateful for Haley Barbour’s support of the first lady’s anti-obesity campaign, but “Haley, when Michelle said you need to run, she didn’t mean for president!” (Because he’s fat — get it?) As for Jon Huntsman, his former ambassador to China who’s now pondering his own 2012 Republican bid: “The next GOP nominee for president. Love that guy!” If Huntsman runs, Obama said he’d be the guy in New Hampshire holding the “honk for Huntsman” signs on the side of the road; if he has an Iowa fish fry, Obama said he’d be there to cook. “He is truly the yin to my yang, and I’m going to make sure every primary voter knows it.” But seriously now: There’s a new spirit of bipartisanship, the president said, and “people with strong disagreements get along as never before. You have the former Massachusetts governor Mitt Romney, current Republican presidential candidate Mitt Romney — working together every day, sharing a host body.”

Mona and Gary Locke. (Richard A. Lipski for The Washington Post)

By all accounts, Daniels — the official Republican speaker of the night — slayed the room with a routine that was both self-deprecatory and snarky. On his own presidential prospects, “all this favorable press I’ve been getting... it’s hard not to let it go to your head: ‘Small,’ ‘stiff,’ ‘short,’ ‘pale,’ ‘unimposing,’ ‘unassuming,’ ‘uninspiring,’. . . ‘wonky,’ ‘puny,’ and ‘pint-sized’. . . It all points to one inescapable conclusion: It’s destiny!” About that sling on his right arm: “Rotator cuff surgery was really a cover story. The truth is I broke a rib traveling to last month’s Governors’ conference. I drew a middle seat between Haley Barbour and Chris Christie . . . I couldn’t get up to go to the bathroom. Their tummies were stuck in the full upright and locked position.”

Andrea Mitchell and Alan Greenspan (Richard A. Lipski for The Washington Post)

(Yes, of course, there was a TSA song parody, too: To the tune of Parliament’s “Give Up the Funk” — “Don’t touch my junk!”)

Ah, good times. Sorry none of us were personally there for Gridiron’s age-old closing ritual, in which all guests linked arms to sing “Auld Lang Syne.” The more memorable musical moment may have come when the Marine Band struck up “Hail to the Chief” to welcome the president.

Obama waved them off: “Play that song we talked about,” he ordered.

And they did: “Born in the U.S.A.”

“Some things just bear repeating,” the president explained.

UPDATED 10:30 a.m.

Photo gallery: 2011 Gridiron Club Dinner in Washington