Back in May of this year, Facebook founder and "Nietzchean superdork" Mark Zuckerberg brought in a Google veteran named Sheryl Sandberg as COO to help whip Facebook into shape for the company's inevitable IPO. The 38-year-old Sandberg was a good decade and a half older than most of Facebook's wunderkind techies, many of whom were Zuckerberg's friends from Harvard and Exeter. There were problems almost immediately.

Sandberg supposedly squashed a much-hyped beer pong game between Facebook and CollegeHumor because she felt that throwing ping-pong balls into plastic cups of suds wasn't an activity befitting of a real corporation. Many Facebookers complained that the company's laid-back party culture had taken a hit now that adults had been brought in to supervise things. A lot of the tech and programming dudes who had been at the company from the get-go left.

Now comes word that Facebook co-founder Dustin Moskovitz is leaving with another top engineer to go start his own company. (Another top exec has also supposedly been interviewing for other jobs.) Tension between Zuck and his Hahhhvad classmate Moskovitz has supposedly been simmering for a while, but the loss is still a blow to Facebook, which now faces the prospect of going public in what certain blog titans want you to believe will be the worst market ever for Internet advertising companies.

Sheesh. Grown-ups ruin EVERYTHING.