What is your best April Fools Day joke you pulled on someone?

I turned over two glasses of water ( so the water was still in them ) and than left a note saying:

Have fun cleaning this up!
Love ya dad!:p

1. Say there is a tsunami when there actually is
2. No one believes it
3. Uh oh

When I was at school I tricked people to thinking Katy perry was my mum because my last name is perry and everyone believed it it was hilarious ????

Once I saw this amazing prank about freezing mentos in ice cubes 2 make it explode and it's indeed the most crafty prank I have ever come across

I WAS LAUGHING SOOOOO HARD THAT DAY but I have not idea what I did and I know something that made someone cry once! all the girls in my class (but me) were playing a prank on my friend timmy (a girl) and...the prank was to pretend not to be her friend so they just ingored her and OMG you know what was the worse part? she cried about it and she had a broken leg! so I felt bad and talked to her at pe (which is where she was crying) and that cheered her up :)

I said to our friend i was moving to london for payback for pranking me

DEMILOVATOCIMORELLI pulled an AWESOME prank on our friend yesterday (and I helped her with some of our other friends! ;) )

He had pranked her earlier that day, so we decided to get him back. So, on yard, she said to a group of us that she was moving to London the day after the last show of our musical. We all pretended to be really upset, because the rest of us knew it was a joke. After about ten minutes, one of DEMILOAVTOCIMORELLI's best friends told me that DEMILOVATOCIMORELLI See More▼ wanted me to tell our friend that it was a joke. Then I said to him, "You know that this is a joke?" It was so, so, so funny!!! :D He really believed it!!! :D :D :D

I set all the clocks in my house forward an hour so when my mum woke up she was all like OMG we had to like leave an hour ago and she got really frantic!