WASHINGTON – President Barack Obama’s staffers have pulled off a seasonal prank while repositioning some artificial snowman decorations to ominously peer into the windows of the Oval Office.

Official White House photographer Pete Souza said in an Instagram post that he and some of his fellow White House staffers had been discussing the possibility of pranking the president by slowly moving the four snowmen on display in the Rose Garden toward the Oval Office “to see if anyone noticed.”

A photo posted by Pete Souza (@petesouza) on

“Then we realized the snowmen were too heavy to easily lift. But finally this morning before the President came to the office, some helpful staff — I won’t say who — moved all the snowmen so each one was peeking through a different window into the Oval,” Souza wrote.

Souza shared a photo of Obama signing end-of-year bills Friday while a snowman ominously looks in from the window behind him.

A second photo shows Obama jokingly reacting to a window-peeping snowman.

A photo posted by Pete Souza (@petesouza) on

“Yes, he enjoyed the prank,” Souza wrote.