Score!! The fancy water cooler at work that dispenses flavored water was reprogrammed by the vendor to display all new flavors! Like Pomegranate Pretzel and Srawberry Bluecheese. 
You should have seen the puzzled faces of those trying to get a cup of their favorite fizzy water.
When a puzzled person would finally hit the touchscreen, the screen would display “Happy April Fool’s Day!” and revert to the regular menu of fruit flavors.