First Lady Says #GimmeFive as Obamas Mark 5th Anniversary of Let's Move

— -- For the fifth anniversary of her Let's Move campaign to fight childhood obesity, first lady Michelle Obama is asking Americans to tweet or post to Facebook five ways to stay fit under the hashtag #GimmeFive.

To promote that drive, she got some help from her husband.

The president appeared with the first lady in a YouTube video posted Monday morning, calling her "Mich" -- a nickname he rarely calls her in public -- and appearing to have forgotten the fifth-year mark.

"We are celebrating a big anniversary," Michelle Obama tells him, explaining why she's filming a video.

"Ah, ohhhhhhh -- what? What exactly are we celebrating?" the president responds nervously.

Video below: