April fools are a tradition of playing practical jokes and spreading hoaxes on April 1st.

April fools!

I love playing April fools pranks on my friends.

Many people consider fossil fools to be detrimental to the environment.

The Feasts of Fools were extravagant celebrations held during the medieval period.

The flannelled fools gathered at the cricket match.

They believed their extravagant lifestyle was a fools' paradise.

The motley fools gathered in the park for their annual convention.

They are no one's fools.

They are nobody's fools.