M*A*S*H
S08E25
“April Fools”
A no-nonsense Colonel, who is a notorious disciplinarian, visits the 4077th during April Fools' Day. Col Potter tries desperately to stop the pranks before he arrives.
Abbott Elementary
S05E18
“April Fools”
It's April Fools' Day, and while the Abbott teachers suffer pranks, Gregory makes a plan to make it through the day.
The Big Bang Theory
S11E18
“The Gates Excitation”
Penny gets the opportunity to host Bill Gates at work when his company wants to partner with her pharmaceutical company. Also, Leonard, Koothrappali and Wolowitz do everything in their power to meet him, while Sheldon thinks he is the victim of an April Fools prank.
The Simpsons
S04E18
“So It's Come to This: A Simpsons Clip Show”
Homer vs. Bart in an April Fools' prank war that ends with a beer explosion.
South Park
S13E04
“Eat, Pray, Queef”
An April Fools' joke goes bad, inspiring fear and fury among the boys.
Roseanne
S02E22
“April Fool's Day”
On April 15th, Dan and Roseanne offer the kids a frantic lesson in family accounting; and in despair finally visit the local IRS office.
SpongeBob SquarePants
S01E38
“Fools in April”
Squidward wakes up and finds out it is April Fools Day. April Fools Day is SpongeBob's favorite holiday so Squidward becomes paranoid, thinking SpongeBob will play a joke on him. Squidward plays a mean trick on SpongeBob, but after SpongeBob runs home crying, Squidward must…
Hey Arnold!
S05E14
“April Fool's Day”
Ernie starts dating a tall model, but she doesn't want to continue dating him because of his height.