Sam's claim that there is no such thing as a snipe is not true. Snipe are a genus of wetlands-dwelling birds native to Europe and North America. They are notoriously difficult to flush and to hit while on the wing, and this has given rise to the modern meaning of "snipe hunt", synonymous with "fool's errand".
Sam and Norm brought a copy of Porky's 2 on their fishing trip. That film's villain, Bill Wiley, was up for the role of Coach, and also appeared in a cold open as a tour guide.
The title derives from the 1940 Carson McCullers novel, "The Heart Is a Lonely Hunter".
The opening shot is of Boston Commons with the George Washington statue. In the distance is the John Hancock Tower.
Despite what this episode's events imply, there is nowhere close enough to Boston to hunt legally that is close enough to drive two twice in one night, let alone time to fit in a dinner.