Not 100% sure it doesn't belong, but...
A company I worked for had terrible trouble with overnight batch runs, almost always failing by morning. A new Ops manager took over, and discovered that the after-hours phone number given out to contact the operators actually rang at the payphone at the pub, fortuitously almost next door (this was in London). The operators spent the time until closing time in the pub, then attempted the overnight batch runs, with varying degrees of ethanol-fueled success.
The new ops manager soon put a stop to that. All was well with the batch runs for a while, but then other problems started arising, the mini-computers showing odd failures. The faults were traced to overheating, and the new Ops manager duly lifted the floor to place sensors, or some such reason. There in the under floor cooling ducts were crates - and I mean crates, not just a few bottles - of beer.
After a replacement set of operators arrived, all the batch problems, which had been a "feature" for several years, were resolved.