There are only a scant handful of times when the series features Philadelphia accents. In “The World Series Defense,” a couple of McElhenney’s friends from his childhood in Philly play some rowdy Philadelphia Phillies fans who defend their mascot from an overeager Charlie (Day) dressed in his Green Man costume, and their accents are true Philadelphia, but other than that the accent is pretty scarce other than background characters.
In the podcast episode, the guys discussed what the Philadelphia accent sounds like. Day describes it as “Boston accent slammed with the deep south mixed with England,” and then all three of them agree that there’s some Australia mixed in as well. (Maybe that’s why Howerton’s character Dennis sounds like Crocodile Dundee when he’s trying to do a Philly accent in “Chardee Macdennis 2: Electric Boogaloo…”) Day explained to listeners why they decided not to do Philly accents rather plainly:
“Well you remember when we first started the show, when we were debating, do we do the accents or not? And we’re like, people won’t know what the f*** we’re doing. They’re gonna be like, ‘What is this?'”
The solution was to choose just specific words to use the accent with, and sharp-eared fans can catch that unique twist on pronunciation every now and again. For example, both “birds” and “hoagie” have a Philly pronunciation, though whether that’s intentional or not is known only by the gang.