They may be young, but they're nobody's fools when it comes to managing money.

He fools around in the lab when the professor isn't looking.

Many April fools were embarrassed when the harmless prank went too far.

April fools! I swapped the sugar for salt this morning and couldn't stop laughing when you took that huge sip.

She April-fools everyone with an elaborate prank each year.

He sent me on a series of fools' errands that wasted my whole afternoon.

History shows that fools to themselves often repeat the same mistakes.

Every year the town reenacted the Feast of Fools with masked processions and role reversals.

Medieval towns celebrated Feasts of Fools with music, masks, and playful reversals of social roles.

The flannelled fools cheered as the autumn parade went by, their plaid shirts flapping in the wind.