Nowadays, Nathan Fielder is best known as a Comedy Central TV star and the president (and founder) of Dumb Starbucks, a parody of the national coffee chain that turned out to be a promotional tie-in for the second season of his show, Nathan for YouBut he also has a past life as a business school graduate--and an advocate for small businesses. In fact, entrepreneurship factors heavily into the 29-year-old Canadian's series. 

Fielder, who graduated from the University of Victoria, one of Canada's top business schools, regularly draws from his marketing wisdom for segments on his show. Among his most hilarious are a "germ-free" hot dog stand with foot pedal-operated dispensers, videos that help break the news of deceased pets to kids, and a magician who surreptitiously takes drunk bargoers' blood alcohol content. As you might guess, those ideas often backfire. 

Fielder also lends his expertise to companies. Before the Dumb Starbucks stunt, he helped a petting farm in Oak Glen, California, turn one of its animals into a celebrity. The video, which featured a pig saving a drowning goat from a pond, instantly went viral, making the rounds of news and talk shows, including Good Morning America and Anderson Live

Here's a roundup of business failures from Nathan for You's first season: