I don't think I've ever really seen such a rule. Except in college but there everyone was carrying beer from the Friday bar to the computers (it was computer sc

I don't think I've ever really seen such a rule. Except in college but there everyone was carrying beer from the Friday bar to the computers (it was computer science so yeah) and nobody ever said anything. This was in the early 90s when they still were expensive and nobody had laptops.