Unscrew the showerhead, incorporate a few drops of food coloring, then screw it back again in. Make sure the showerhead is tightly secured.
We admit, this April Fools’ prank may be a late sleeper’s nightmare. https://miriamiviv810836.bloginder.com/34598037/harmless-and-hilarious-food-pranks-for-april-fool-s-day-options