Nickname for the city of Las Vegas.
The Polar Plunge is an event for the benefit of the Special Olympics during which participants jump into a swimming hole in Lake Monona. Since the event takes place in late February (February 20th, 2010 at Olin Park), the lake is always frozen solid. Only the bravest (craziest) of souls dare jump. For many, sponsoring a "plunger" is the best way to participate in this very Wisconsinesque activity.
The Dirty Bird is a celebratory dance popularized by ex-Atlanta Falcons star Jamal Anderson. Anderson, who was known for his colorful antics on and off the field (much like Muhammad Ali, whom he knew as a child), would execute this goofy dance in the end zone after touchdowns.
The "Dirty Birds", when plural, can refer to the Atlanta Falcons football team and its players.
The infamous NYC street vendor hot dog, generally Sabrett's brand shoved haphazardly into a soggy bun and topped with a variety of gloppy condiments. The consumption of this NYC grab-and-go staple is almost an urban rite of passage and the Manhattan version of Russian Roulette.
(noun) Common term for hamburger in much of Maine, especially when used as an ingredient or topping (as in hamburg pizza).