Britney Spears' Kids Scare The Crap Out Of Her, And Her Scream Is Definitely Not Lip-Synced

Just because you're a pop-star doesn't mean your kids won't still be brats once in a while.

And we mean brats in the most loving way possible.

Britney Spears' sons, Sean Preston and Jayden James, stole the singer's phone and decided to play a little prank on her. They hid in the dark hallway and jumped out at her as she walked by. Her reaction is priceless.

Hearing BritBrit scream like that is somehow comforting and satisfying at the same time. And hearing her shout "SEANPRESTON" as though it's one word proves to us that even celeb kids aren't immune to having your mom middle-name you when she's pissed.

Britney posted a response after the video went viral, promising revenge on her two kids. And I've gotta say...I'm hoping this turns into an insane prank war.