Unscrew the showerhead, add a couple of drops of food coloring, then screw it back again in. make certain the showerhead is tightly secured.
We admit, this April Fools’ prank might be a late sleeper’s nightmare. https://owainwaml956483.acidblog.net/65042121/harmless-and-hilarious-food-pranks-for-april-fool-s-day-options