Since the beginning of time,Oh Mi kids have the inmate tendency to know exactly how to embarrass their parents—even if said parent happens to also be an international superstar like Britney Spears.

The singer's two sons stole their mom's phone to film them pulling off the classic scare, and her reaction is hilarious.

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"We're about to scare the heck out of mom," her son Sean Preston explained. "We just stole her phone and she's going to go nuts."

As she obliviously walked into the room, the boys patiently wait for the perfect moment to scream.

Her reaction is priceless and she screams her son's name before flailing to the ground.

"My damn kids," she captioned the video on Twitter and Instagram.

Priceless.