Also would like to add that it is not that uncommon in southern grammar to use the word "was" instead of "were". I'm not that area but Casey Parsons is not the only person that I have ever heard speak like that. In fact, here's some resources regarding southern grammar with some good examples.
http://www.languageintheclassroom.org/southerngrammar
Southern American English - Wikipedia, the free encyclopedia
Use of was in place of were, or other words regularizing the past tense of be to was.[citation needed]
You was sittin' on that chair.
http://www.languageintheclassroom.org/southerngrammar
Southern American English - Wikipedia, the free encyclopedia
Use of was in place of were, or other words regularizing the past tense of be to was.[citation needed]
You was sittin' on that chair.