On the outside they're just fluorescent lit excuses to drink at work or very fancy events with an open bar to debut your best red sparkly outfit, but if you look deeper they're absolute chaos. Combining alcohol, a party atmosphere and the nostalgia/inspiration of a new year can lead to the quietest person at work standing on a table and declaring her hatred for everyone. The guy who is always agreeable will probably get drunk and tell everyone they treat him like a punching bag and your boss will most likely give a speech that mentions the fact that the staff is a "family" in the same sentence as something deeply insulting and problematic.
Here are the funniest tweets we could find about the unhinged awkwardness of partying with your office.