Dunkin' Donuts businesses have a special trick up their sleeves this April Fools' Day, and it's no joke.

The chain is offering free iced coffee to customers all day on April 1.

During business hours, participating stores in northeast Ohio will offer free small iced coffee in flavors like mocha, caramel, blueberry, and cinnamon.

All flavors are made with Dunkin' Donuts' double-brewed coffee.