It wouldn’t be Christmas at Kristen Bell and Dax Shepard’s house without some good ol’ fashioned holiday pranks! The Armchair Expert podcast host recently shared a “nightmare holiday experience” that totally freaked him out at home, proving that Bell is the mastermind holiday prankster.

The prank that had Shepard questioning “the laws of this universe” had to do with their Christmas tree. He recounts the story in his Dec. 9 podcast, explaining that they recently got a “huge, beautiful tree,” which they decorated. But a couple days later, he was in for the shock of his life when he saw the tree drooping.