America has a number of distinctive accents like the New England accent, a New York accent, a southern accent and according to Dennis, the most annoying on all, the Philadelphia accent.

Philadelphia skyline (Doug Pensinger/Getty Images)

Dennis' hate for the accent is understandable. When he was looking to start a career in broadcasting he took classes in order to lose his South Philadelphia sound.

University of Pennsylvania professors Bill Labov  & Josef Fruenwalk tell WCAU TV their research show the "classic" Philadelphia accent is changing and moving towards more "northern" traits.

There is one word's pronunciation, however, that is not changing. Watch the video and find out the word.

 

View more videos at: http://nbcphiladelphia.com.