(Setting: Erin and I are lying in bed, watching the end of the interleague game between the Boston Red Sox and the Arizona Diamondbacks. Sox play-by-play announcer Don Orsillo has just made reference to the Arizona Cardinals.)
Erin: Hold on, did he just say Arizona Cardinals? I thought it was the St. Louis Cardinals.
Bill: That's the baseball team. The Arizona Cardinals are in the NFL.
B: They used to be the St. Louis Cardinals, though, until the late 80s.
E: Wait, both teams had the same name?
E: Well, that's stupid.
B: It's not that uncommon, really. There used to be two teams called the New York Giants, after all, until the the baseball team moved to San Francisco.
E: I still say it's stupid. Show some originality!
B: You have to remember that back in the day, there really weren't too many clever team names floating around. You either named your team after an animal, some sort of nickname for the people living in the region, or an article of clothing.
E: Article of clothing?
B: Um, yeah. Like, you know, the Red Sox?
E: Ohhhh... okay. I see what you mean. Clothing the team actually wears.
E: I thought you were being weird again and just meant some completely random article of clothing. Like the New Jersey Pants or something.
B: I would totally root for the New Jersey Pants.