Prompt

What is the best April fools Joke you have done??

The best joke I have done... is... at 12:30 am a few April Fools Days ago, I went around the house and changed EVERY alarm clock (besides my parents alarm clocks). So if it were 3:00 pm, it said 4:00 pm.
I got yelled at...
BUT it is still fun to think back that I had EVERYONE fooled!