There are two men, let's call them Keith and Brian.
Keith went to visit a colleague in their office, where around 5 of them worked together before going on to participate in a company online presentation/meeting that night. At some point during the evening, they paused for dinner and Keith drank a bottle of beer while standing near the window. They then resumed working as planned.
Brian makes up the rules that everyone else has to follow but decides they don't apply to him. Brian's employees regularly arrange boozy parties in Brian's garden, and Brian enjoys attending along with lots of the people who work for him. Brian's employees buy a drinks fridge for the party and pop to Tesco to buy a big suitcase of booze for everyone who will be attending. Brian doesn't tell anyone about these parties because he knows it's against the rules that he is telling everyone else to follow. Brians finds it very amusing that he's so clever getting away with this stuff.