56 pictures of President Obama discovering his inner child for his 56th birthday

Hanging out with a Cub Scout.

Hi! (Or bye!)

In his most natural state.

You've got something on your face.

POTUS reaching out to a younger fan.

A presidential cheek pinch.

Nice baby face.

The president lets this first-grader touch up his hairdo.

Obama says hello to a set of twins on the South Lawn.

The president also fits in with a slightly older crowd.

This is Lincoln Rose Pierce Smith, the daughter of former Deputy Press Secretary Jamie Smith.

One White House staffer is extra excited about this encounter.

Secret secrets.

A young boy reaches up to touch the president's hair.

The president hoists a baby into the air during a visit to Japan.

The POTUS casually greets a family at Stonehenge.

The president and his daughters celebrate the arrival of Bo, one of their Portuguese water dogs.

Peek-a-boo!

Trick or treat!

Spelling out "Ohio" with some of the state's happiest residents.

The president at the heart of the La Follette Lancers' huddle in Madison, Wisconsin.

The president greeting some Estonian schoolgirls.

First lady Michelle Obama persuades her husband to join the dancing in Mumbai, India.

Sharing secrets.

The president embraces a young girl during a 2011 visit to Ireland.

An adorable tie-wearing baby visits the White House.

Blowing dandelions at Martha's Vineyard.

Holding House Minority Leader Nancy Pelosi's granddaughter in California.

President Pied Piper.

A staring contest aboard Air Force One.

Obama hoists his young pal.

Skeptical infants peer at the POTUS through a window.

The president fills in as coach for his daughter Sasha's basketball game.

It's hard to say who looks more dapper.

Obama circles his desk with a petite pink pal in hot pursuit.

Cool dad.

A quick game of hoops in Missouri Valley, Iowa.

High five!

The president said this shot of him and a pint-sized Spider-Man was his favorite of 2012.

A young Ohio boy splits some strawberry pie with the POTUS.

Abraham Lincoln watches in approval as the president and a young girl hug in the Oval Office.

Keeping pace with children running through the White House.

Getting up close and personal with presidential duck face.

This baby gives Obama a fist-bump of his own.

The signature fist-bump.

The president carefully inspects a classroom in Georgia.

Obama puffs out his cheeks to amuse an infant visitor to the Oval Office.

A sleepy young Iowan rests his head on the president's shoulder.

"What do you mean you didn't vote for me?!" he did not actually say.

This kid will never take off that cast.

This baby got a little cheeky with the president.

Three happy participants at the annual Easter Egg Roll on the White House's South Lawn.

Joy and babies in Las Vegas.

Similarly sassy expressions.

Obama greets one of his youngest fans in Prague in 2009.

The president is more amused than his young mohawked friend.