A snapshot into the unregulated world of sperm donation:

It's costly to give away your sperm for free -- just ask Trent Arsenault. The 36-year-old Northern California man has "fathered" 14 children since 2006, and has 4 more on the way. But they may be his last.

The FDA got wind of his one-man sperm donor operation last year and has ordered him to shut it down. Though he charges nothing for his services, the agency has labeled him a "manufacturer of human cells."

He's fighting the order, but could ultimately face a $100,000 fine if things don't work out.

Trent Arsenault connects with local couples on his website, trentdonor.org. It includes his resume, medical history, STD tests and pictures of babies born of his seed. His efforts have resulted in at least 328 donations to 46 unique recipients, according to the FDA's cease and desist letter. -- Legally Weird