Out of their comfort zone, feeling social force to try to be funny, they overextend themselves in obvious ways.
I'm keeping this in my "quotable quotes" file - do you have a preferred attribution, or is "jedrek" sufficient?
I contend there are worse things that businesses can do with their time than think up bad jokes. Let's keep some perspective here, people.
1. Using "agile" as a noun.
2. Meetings.
3. Conflating http and CRUD with high tech.
The one time I went to an organized party on NYE, the bathrooms were all vomited over by 11pm.
Opportunities to act differently for one day of the year are more valuable than that. That way, you can explore a side of you without being "inconsistent" with your usual public self, or get to know a different side of other people.
Anyone can decide to dress up like a pirate on any given day, but most of will wait for Halloween to enjoy it.