Watercooler Effect

The driving force created when two or more employees have an informal, face-to-face conversation, about a rumour, as though at a watercooler
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Eli Holzman, one of the heads of All3Media and exec producer of the Peacock's forthcoming mega-gameshow "Million Second Quiz," hopes to capture the watercooler effect with his 12-day live strip set to bow in September.
You're never going to stop the "watercooler effect"--people standing around the watercooler discussing what's happening and wondering if their jobs are going to be eliminated.