Here are some April Fools' pranks celebrities pulled yesterday.
Justin Bieber tweeted this to his 37 million followers: "As promised taking all fan phone calls TODAY at (888) 847-9869. Talk to u soon!" That number is TMZ's tip line and their phone hasn't stopped ringing since.
Mike Tyson tweeted: "At the doctor's office this morning. Getting this tattoo removed from my face. This is going to be painful." But two hours later, the boxing legend had to admit to his joke. "OK. April Fools. There is no #GoodbyeMikeTysonTattoo. This tattoo is with me forever."
Snooki tweeted a photo of herself wearing a lace gown and diamond-encrusted tiara, with the caption: "Jionni and I eloped! Here's a pic of the magical day!"
Teen Mom star Farrah Abraham, who was arrested for a DUI in March, joked that she's adopting -- at least we hope she was joking. "Big day for Sophia & I," she tweeted. "Were adopting a baby brother, Sophie is super excited xo! Adopting is a #blessing."
Even the White House got in on the fun, tweeting, "This morning, the White House released a special video message from the President," along with a link to a YouTube video. But it wasn't President Obama in the video. It was "kid president" Robbie Novak, who appeared on-screen. "It looks like you were expecting someone else," the little politician said.