The author of this piece is a white male who, at 52 year old, spent a year working for HubSpot after being laid off by Newsweek magazine. He wrote a book about his experience.

In this article - http://fortune.com/disrupted-excerpt-hubspot-startup-dan-lyo... he gives a lot of information on exactly the kind of culture he is talking about.

Stuff like, "Later I also will hear a story about janitors coming in one Saturday morning to find the following things in the first-floor men’s room: a bunch of half-empty beers, a huge pool of vomit, and a pair of thong panties. The janitors were not happy. They get even more distressed when, one morning, a twenty-something guy from the HubSpot marketing department arrives wasted and, for reasons unknown, sets a janitor’s cart on fire."

The whole thing is worth a read.