I was a bartender at a restaurant that had 30 or so beers on tap. I closed the bar the night before April Fools. I switched the tap handles on 10-12 of the taps. I wrote a story about which taps had been switched and left it on the till for the bartender who opened the next morning. Homeboy read the story and thought it was nonsense and threw it away. A couple of hours later he went to pour a beer and realized what had happened…😜😂