Every year, high school seniors across the country celebrate their graduation with a creative prank.

Understandably shocked, she quickly shuts the door to compose herself.

When she returns, the first thing she says to the seniors is, Good morning, little bunnies.

High School Seniors Pull Off Amazing Prank on Principal

Commenters guess that she is referring to her husband, who was probably helping the seniors with their scheme.

How long have you been here?

McGrath asks the students.

This is the most beautiful thing I’ve ever seen, she tells them.

The epic idea was concocted after McGrath invited the teens to her house at midnight after their senior prom.

Someone joked that they wouldn’t mind going to bed right there in the living room.

Then, a couple of us glanced at each other like, hmmmm.'