If you're in your wheelhouse, that's any situation in which you feel comfortable....And Baseball. The term wheelhouse appears to have entered common use through baseball. In baseball, a batter's wheelhouse is the part of a batter's strike zone in which he or she is most likely to hit a home run. It seems likely that the nautical form of wheelhouse was borrowed by baseball, becoming prominent in baseball writing starting in the 1950s. From there, it takes only a bunt for the term to become embedded in American business-speak.
Definition: Neckbeard is a derogatory term that refers to a nerds. It is derived from his lack of proper manscaping and growth of beard hair on his neck. The neckbeard is a good indicator that a person cares more about video games and comic books than how he appears, which isn't the worst thing. Example Let's go play pkmn.
Bluebeard is a wealthy and powerful man, yet a frighteningly ugly nobleman who has been married several times to beautiful women who have all mysteriously vanished. When Bluebeard visits his neighbor and asks to marry one of his daughters, the girls are terrified.