As dusk falls, the president, first lady and girl scouts have a song session around a makeshift campfire on June 30.

Photographer: Alex Wong/Getty Images

As dusk falls, the president, first lady and girl scouts have a song session around a makeshift campfire on June 30.

Photographer: Alex Wong/Getty Images

Photos: Girl Scouts Take Over the White House Lawn

Here's something you don't see every day.

About 50 Girl Scouts camped out on the White House lawn Tuesday evening, at least until rain and thunder storms forced a move inside to a nearby conference room. The event was to promote outdoor activities and national parks. While the weather held out, President Barack Obama and first lady Michelle Obama joined the girls on the lawn for knot-tying and songs. “What are you guys doing in my yard?” the president joked when he arrived. “When did you guys show up?”

All tied up
All tied up

The first lady joins Girl Scouts on the White House lawn for a lesson in tying knots.

Photographer: Alex Wong/Getty Images
Brace yourself
Brace yourself

The president gears up for a group hug.

Photographer: Chip Somodevilla/Getty Images
They're huggers
They're huggers

More girl scouts go in for the hug.

Photographer: Chip Somodevilla/Getty Images
Campfire tunes
Campfire tunes

The president sings songs with fourth-grade girl scout Daphnye Shell. “You guys sound pretty good,” the president said, noting that the first lady was “rocking out.”

Photographer: Alex Wong/Getty Images
Singing around the “fire”
Singing around the “fire”

As dusk falls, the president, first lady, and girl scouts have a song session around a makeshift campfire. On his way out, the president joked, “I've got to work. I'm not allowed to have fun.” He added teasingly, “You guys better clean up this mess—when I wake up in the morning.”

Photographer: Alex Wong/Getty Images