A nickname originally given to the Elmira Civil War Prison Camp by its Confederate prisoners. Hellmira can still be used as a derogatory term for the city of Elmira itself.
A rose bush or thorn bush
A nickname for Manitowoc for its location on Lake Michigan. I'm not sure why they it's capital with an '-ol' at the end--because I'm pretty sure Manitowoc isn't a building--but that's how it's spelled on the city's marketing literature, including the sign when coming into town.
Sunny P is a local nickname for Sun Prairie. I guess it's a takeoff of the orange juice like drink, Sunny D.
A french-style doughnut, typically dusted with powdered sugar and accompanied by a cup of chicory-laced cafe au lait. Made famous in Cafe Du Monde, located in the old French Market on Jackson Square.