The "Gum Wall" is just that, a wall of a building with chewed gum stuck to it. It's an odd landmark found at the famous Pike Place Market.
The people in Buffalo are a very religious bunch (mostly Roman Catholic), as well as very taken to their alcohol.
Local nickname for the northernmost high school in the Peoria Public School District, Richwoods High School. Known for their association with the Peoria Country Club, even using their golf carts during their homecoming ceremony.
Berkeley is known for its odd culture and political leanings, and has been since the 1960's. Berzerkeley is a nickname used to help capture the oddity that is Berkeley, especially UC Berkeley and its students.
Shorthand for "Bridge and Tunnel," the term for people who make the commute to Manhattan via bridge or tunnel, but who don't actually live in "the city."