Scarlett Johansson & Sean Penn: All Over Each Other at White House Correspondents' Dinner!

Not even being in the presence of the president could put a damper on Scarlett Johansson and Sean Penn's passion.

The odd couple couldn't keep their hands off of each other during the White House Correspondent's Dinner Saturday night in D.C.

ScarJo sat on Sean's lap at one point, according to the New York Post, while UsWeekly said the two had an "intense" makeout during the dinner.

And interestingly enough, the two went MIA in the middle of the event:

TWITTER: Follow PartyGirl

The duo left the event for an hour before returning with Sean's tie askew.

We're sure they were just taking a really long smoke break, discussing foreign policy or something else equally innocent.

It was a late night for ScarJo and Sean, who both later attended Bloomberg and Vanity Fair's party.

Despite their dinnertime PDA, they didn't take photos together once inside the event. Instead, Scarlett posed with her brother Hunter and Bradley Cooper, among other VIPs.

But paps caught the amorous twosome exiting the bash hand-in-hand around 3 a.m.

Nice to see 50-year-old Sean can keep up with someone almost half his age, huh?

WATCH: Scarlett & Sean's cozy weekend

Hello, you either have JavaScript turned off or an old version of Adobe's Flash Player. Get the latest Flash player.

Hayden Panettiere Shakira T.A.T.u. Nikki Reed Paz Vega