President Joe Biden and first lady Jill Biden brought some Christmas Eve cheer to hospitalized children who aren't well enough to go home for the holidays, VOA reported. 

It's long-standing tradition for first ladies to visit Children's National Hospital at Christmastime, but Joe Biden's visit on Friday was a surprise. It marked the first time that a sitting president had joined the fun, the White House said.

But President Biden got a visit from a Christmas troll Friday when a father participating in the annual White House NORAD Santa-tracking call used the phrase “Let’s go, Brandon,” the recently coined stand-in for “F— Joe Biden,” AFP reported. 

The dad, identified only as Jared from Oregon, wished the president and first lady Jill Biden a merry Christmas before adding the anti-Biden phrase at the end of his family’s portion of the call. “Merry Christmas, and let’s go, Brandon,” the father said as he signed off.

“Let’s go, Brandon, I agree,” Biden said without missing a beat.

It was unclear from Biden’s reaction if he had recognized the phrase.

Jill Biden, seated next to her husband on a couch in the White House–adjacent Eisenhower Executive Office Building, did seem aware of the meaning and gave an awkward chuckle before rolling her eyes.