Police rushed to a factory in Springfield, Ohio, after one worker texted her sister to say she was hiding from an active shooter on site.
The fake call prompted an emergency response to an empty house in Wichita, Kansas, police told reporters.
The tech giant usually comes up with a fake feature or announcement to mark the annual occasion, and some have been particularly elaborate.
Salty toothbrushes, cream cheese toothpastes and meatloaf cupcakes are some simple jokes parents can pull on their children.
There are so many ways to play April Fools' jokes on your unsuspecting friends and family via messaging.
Nobody should get hurt this April Fools' Day.
"To wrongfully submit yourself to the growing number of those infected when you have the privilege of health is inconsiderate and embarrassing."
Mayor Caroline Cayeux of French town Beauvais admits "this was a mistake and we will do better next year."
The origins of April Fools' Day, a holiday celebrated by playing tricks on people and spreading hoaxes, are shrouded in mystery and lost to history. But there are a few good theories of how and why the first of April became a day of impish delight.
The French capital was the place to be on April Fools' Day.
"Stalin's face is at Arbatskaya, this is not a joke," Russians wrote on Twitter.
Richard Branson's #BransonToBranson April Fools' Day hoax may have pushed the Branson, Missouri, mayor out of office.
CERN researchers published a press release about finding the Force. That's a capital F.
The founder of Virgin announced the company would be moving its U.S. headquarters to Branson, Missouri.