April Fools‘ Day
Prank
to play a trick on somebody as a joke
Jack pulled a prank on his roommate on April fools’ day.
Jack pranked his roommate on April fools‘ day.
Mischief
make mischief
Do yourself a mischief
trick
One of the problems of old age is that your memory starts to play tricks on you.
He amused the kids with conjuring tricks.