When I was 18, I was in a band & needed around $3,000.00 for keyboard equipment. I got a part-time phone job in the evening working for a carpet-distributor business. Every day, the office manager got an empty paper cup from the Sparkletts water dispenser & poured Vodka in it. He drank a whole bottle during each 4-hour shift. The office was on the 2nd floor & just before quitting time, he'd walk to the balcony, announce to the employees, "Well, the bar's closed," & drop the empty bottle into the dumpster 30 feet below, while we all LOL'd at how plastered he was. The dumpster always had pieces of carpeting in it, so the bottle never made any noise when it landed.
One afternoon, I told my co-workers to get ready for a big laugh when he was finished with his bottle.
Another employee & I climbed into the dumpster & removed all the carpet so it was empty.
Right on time, at 5:00, he got up & said, "Well....the bar is closed." He walked to the balcony, dropped the bottle & started walking back into the office. When the bottle landed in the empty dumpster, it made a huge sound like an explosion. It scared the hell out of him & he jumped.
When he saw us laughing, he realized what we did & he said, "You dirty bastards.....you mutha fu--ers," which, of course, made us laugh even harder.