The pair were photographed last month (takes a while for the pics themselves to clear national security, apparently) looking at something attention-grabbing on J.T.'s cell phone.
Unless this is the two of them reviewing their photo together and deciding what filter to use...
Regardless, the pair seemed very interested in whatever Timberlake was pointing out, which even inspired the commander in chief to crack a grin.
Timberlake and Obama were photographed in the Blue Room of the White House prior to the "In Performance at the White House: Memphis Soul" concert in the nearby East Room. Earlier that day, Timberlake was part of the interactive student workshop "Soulsville, USA: The History of Memphis Soul," which was hosted by first lady Michelle Obama in the State Dining Room.
Maybe the Tennessee-born J.T. was showing POTUS pics of his hometown?