I need an April Fool's Day prank idea...

April Fool's Day is on a Sunday this year so it's super hard to think of something. Me and my friend want to prank our other friend, and make it really hilarious. Not something that's going to scare her to death, but something funny that we could do on facebook, or via text message. Please help! P.S. She's a 9gagger so I need to make her pay.